Heavy-Duty Wrenches

In the late 1920s Snap-on began offering a line of heavy-duty box-end wrenches with stub handles, intended for use with a tubular extension handle when higher torque was needed. These wrenches were initially offered under the Blue Point brand and were available in straight and offset single-box styles.

By 1934 a series of open-end stub wrenches in both straight and offset styles had been added.

By the 1960s the heavy-duty stub wrenches had been transitioned to the Snap-on brand. As with most other Snap-on wrenches, the Snap-on heavy-duty wrenches were very similar to their Blue Point predecessors. Since the Blue Point and Snap-on models are basically the same, examples from both brands will be shown in this section.

Offset Box-End Stub Wrenches

Blue Point "Boxocket" 230 15/16 Heavy-Duty Offset Single-Box Wrench

Fig. 247. Blue Point Boxocket 230 15/16 Offset Single-Box Wrench, with Insets for Side View and Back Side Detail, 1937.

Fig. 247 shows a Blue Point 230 15/16 heavy-duty offset single-box wrench with a stub shank, stamped "Blue Point Boxocket" on the shank, with date codes "7-" and "9" for 1937 and 1939 on the back side.

The overall length is 7.3 inches, and the finish is chrome plating.

This wrench has a nominal 5/8 diameter stub handle and is designed to work with the model 15{-A,B} tubular extension handle when greater leverage is needed. The stub handle is fitted with a small-style locking pin to secure the extension handle.

Blue Point X-340 1-1/16 Heavy-Duty Offset Single-Box Wrench

Fig. 248. Blue Point X-340 1-1/16 Heavy-Duty Offset Single-Box Wrench, with Insets for Side View and Marking Detail, 1951.

Fig. 248 shows a Blue Point X-340 1-1/16 heavy-duty offset single-box wrench, stamped "Blue Point" and "Made in U.S.A." on the stub handle, with a stylized "1" date code for 1951 on the back side.

The overall length is 8.1 inches, and the finish is cadmium plating, with some losses due to rust.

This wrench has a 11/16 nominal diameter stub handle and is intended for use with a model 18{-A,-B} tubular extension handle. The stub handle is fitted with a small-style locking pin to secure the extension handle.

Blue Point X-700 2-3/16 Heavy-Duty Offset Single-Box Wrench

Fig. 249. Blue Point X-700 2-3/16 Heavy-Duty Offset Single-Box Wrench, with Insets for Side View and Marking Detail, 1948.

Fig. 249 shows a Blue Point X-700 2-3/16 heavy-duty offset single-box wrench, stamped "Blue Point" and "Made in U.S.A." on the stub handle, with a stylized "8" date code for 1948 on the back side.

The overall length is 13.9 inches, and the finish is cadmium plating, with some losses due to rust.

This wrench has a 15/16 nominal diameter stub handle and is intended for use with a model 30{-A,-B} tubular extension handle. The stub handle is fitted with a small-style locking pin to secure the extension handle.

Blue Point X-940 2-15/16 Heavy-Duty Offset Single-Box Wrench

Fig. 250. Blue Point X-940 2-15/16 Heavy-Duty Offset Single-Box Wrench, with Insets for Side View and Marking Detail, 1949.

Fig. 250 shows a Blue Point X-940 2-15/16 heavy-duty offset single-box wrench, stamped "Blue Point" and "Made in U.S.A." on the stub handle, with a stylized "9" date code for 1949 on the back side (not shown).

The overall length is 14.6 inches, and the finish is cadmium plating, with some losses due to rust.

This wrench has a 1-1/8 nominal diameter stub handle and is intended for use with a model 36{-A,-B} tubular extension handle. The stub handle is fitted with a small-style locking pin to secure the extension handle.

Straight Box-End Stub Wrenches

Snap-on XH132A 1 Inch Heavy-Duty Single-Box Wrench

Fig. 251. Snap-on XH132A 1 Inch Heavy-Duty Single-Box Wrench, with Insets for Side View and Marking Detail.

Fig. 251 shows a Snap-on XH132A 1 inch heavy-duty single-box wrench, stamped with the Snap-on logo and "USA" on the stub handle.

The overall length is 7.8 inches, and the finish is chrome plating.

This wrench has a 5/8 nominal diameter shank and is intended for use with a model 15-{A,B} tubular extension handle. The stub handle is fitted with a large-style locking pin to secure the extension handle.

Snap-on XH134A 1-1/16 Heavy-Duty Single-Box Wrench

Fig. 252. Snap-on XH134A 1-1/16 Heavy-Duty Single-Box Wrench, with Insets for Side View and Marking Detail, 1962.

Fig. 252 shows a Snap-on XH134A 1-1/16 heavy-duty single-box wrench, stamped "USA" with a stylized "2" date code for 1962.

The overall length is 7.8 inches, and the finish is cadmium plating.

This wrench has an 11/16 nominal diameter shank and is intended for use with a model 18{-A,B} tubular extension handle. The stub handle is fitted with a large-style locking pin to secure the tubular handle.

Snap-on XH136A 1-1/8 Heavy-Duty Single-Box Wrench

Fig. 253. Snap-on XH136A 1-1/8 Heavy-Duty Single-Box Wrench, with Insets for Side View and Marking Detail.

Fig. 253 shows a Snap-on XH136A 1-1/8 heavy-duty single-box wrench, stamped with the Snap-on logo and "USA" on the stub handle.

The overall length is 7.8 inches, and the finish is chrome plating.

This wrench has an 11/16 nominal diameter shank and is intended for use with a model 18{-A,B} tubular extension handle. The stub handle is fitted with a large-style locking pin to secure the tubular handle.

Open-End Stub Wrenches

Tubular Handles

Tubular extension handles for the heavy-duty wrenches were available in five sizes, with nominal lengths 15, 18, 24, 30, and 36 inches. The inside diameter of the handles increases with the length, reflecting the engineering requirement that the handle strength increase proportionally with the potential applied torque.

The nominal length of the tubular handles also serves as the base model number. The handles have gone through two model revisions, as a result of changes in the size and placement of the locking pins on the stub wrenches. The later handles will have an "A" or "B" suffix to the model number, e.g. 15-A or 24-B.

Snap-on 15-A 15 Inch Tubular Handle

Fig. 254. Snap-on 15-A 15 Inch Tubular Handle, with Insets for Back Side and Marking Detail, 1967.

Fig. 254 shows a Snap-on 15-A 15 inch tubular handle, stamped with "Snap-on" and "USA" around the circumference, and with a stylized "7" date code for 1967 (see composite inset).

The overall length is 15.0 inches, and the nominal inside diameter is 5/8 inch. The finish is chrome plating.

This handle is drilled with two holes near each end, a smaller hole placed at 1.25 inches from the end, and a larger hole at 2.5 inches from the end. The two holes allow the handle to be used with wrenches having either the small or large locking pin.

Hammers and Striking Tools

Blue-Point No. 0 Ballpeen Hammer

Fig. 255. Blue-Point No. 0 Hammer, with Insets for Marking Detail, ca. 1950s.

Fig. 255 shows a Blue-Point No. 0 16 ounce ballpeen hammer, marked "Kenosha, Wis." and "U.S.A." on the head (see left inset).

The overall length is 13.7 inches, and the length of the head is 4.0 inches.

The right inset shows the "BPH-12" marking on the handle, a later model number for handles that came into use between 1954 and 1960.

The head on this example is marked with a No. 0 model number, an earlier numbering system used into the 1950s. By 1960 the ballpeen hammers were assigned model numbers in a "BP-" series followed by the weight in ounces, i.e. BP-16 for this model. The older model number for the head suggests a manufacturing date in the late 1950s.

Examples of ballpeen hammers from other makers can be seen in the Billings Ballpeen Hammer, Champion DeArment 3/0 Ballpeen Hammer, and Herbrand BP-16 Ballpeen Hammer.

Blue-Point Supreme S-14 Cape Chisel

Fig. 256. Blue-Point S-14 Cape Chisel, with Inset for Side View, 1954.

Fig. 256 shows a Blue-Point S-14 cape chisel, marked "Supreme" and "USA" with a date code for 1954.

The overall length is 5.7 inches.

Blue-Point Supreme S6P Cotter Pin Puller

Fig. 257. Blue-Point S6P Cotter Pin Puller, with Insets for Side View and Marking Detail, ca. Mid 1930s to 1940s.

Fig. 257 shows a Blue-Point S6P cotter pin puller, stamped "Supreme" and "Made in U.S.A." on the shank, with the model number on the back side.

The overall length is 6.2 inches, and the finish is plain steel.

Pliers and Cutters

From 1924 through 1945 Snap-on sourced most of its pliers and cutters from the Forged Steel Products Company, makers of the Vacuum Grip brand. In addition to being a supplier, Forged Steel Products played an important role in the development of Snap-on, and in 1945 the company was acquired by Snap-on. For more information on this interesting company, see our article on the Forged Steel Products Company.

In later years Snap-on also sourced pliers from other suppliers, including the Diamond Calk Horseshoe Company and Channellock.

Vacuum Grip Pliers and Cutters

Our article on the Forged Steel Products Company includes a number of examples of Vacuum Grip pliers and cutters produced from the 1920s through 1940s. Please refer to that article for information on these tools.

After the acquisition of Forged Steel Products in 1945, Snap-on continued production of Vacuum Grip pliers in the Newport, Pennsylvania facility for some years. The pliers continued to be marked with the Vacuum Grip brand, but were now marked with the Snap-on name instead of Forged Steel Products.

Snap-on "Vacuum Grip" No. 5 Midget Ignition Pliers

Fig. 258. Vacuum Grip No. 5 Midget Ignition Pliers, with Insets for Side View and Marking Detail, 1961.

Fig. 258 shows a pair of Snap-on "Vacuum Grip" No. 5 midget ignition pliers, marked with "Snap-on Tools USA" and an "I" date code forged into the underside of one handle, with "Vacuum Grip No. 5" forged into the other handle (not shown).

The overall length is 4.5 inches, and the finish is plain steel.

The stylized "I" date code indicates production in 1961.

An earlier example of this model can be seen as the Vacuum Grip No. 5 Midget Ignition Pliers.

Snap-on Vacuum Grip No. 308 Battery Pliers

Our first figure for this section shows an example of the early Vacuum Grip production under the Snap-on name.

Fig. 259. Snap-on Vacuum Grip 308 Battery Pliers, with Insets for Side View and Marking Detail, 1946.

Fig. 259 shows a pair of Snap-on Vacuum Grip No. 308 battery pliers, stamped with the Snap-on name and "Newport, PA. U.S.A." on the front, with "Vacuum Grip" and a "TM. Reg. U.S. Pat. Off." trademark notice on the back side. A stylized "6" date code for 1946 can be seen at the right of the Snap-on name.

The overall length is 7.9 inches, and the finish is polished steel.

These pliers are very similar to the earlier Vacuum Grip No. 308 Battery Pliers shown in our article on Forged Steel Products.

Snap-on Vacuum Grip 58R 8 Inch Lineman's Pliers

Fig. 260. Snap-on Vacuum Grip 58R 8 Inch Lineman's Pliers, with Insets for Side View and Back Side Detail, 1955.

Fig. 260 shows a pair of Snap-on 58R 8 inch lineman's pliers, stamped "Vacuum Grip" and "Snap-on" around the pivot, and with "USA" on the underside of one handle. The underside of the handle is also stamped with date codes "5" and "6" (not shown), indicating production in 1955.

The overall length is 8.5 inches, and the finish is polished steel.

Snap-on Vacuum Grip No. 62 8 Inch Angle-Nose Pliers

Fig. 261. Snap-on Vacuum Grip No. 62 8 Inch Angle-Nose Pliers, with Insets for Side View and Marking Detail, 1950.

Fig. 261 shows a pair of Snap-on Vacuum Grip No. 62 8 inch slip-joint angle-nose pliers, marked with "Vacuum Grip" and the model number forged into the underside of one handle, with "Snap-on Tools USA" and a date code "0" for 1950 on the other handle.

The overall length is 8.6 inches, and the finish is nickel plating.

Snap-on 94 4 Inch Needlenose Pliers

In later years Snap-on offered needlenose pliers in a model 94 with a 4 inch nominal size. The next figures show two generations of the model 94 pliers.

Fig. 262. Snap-on 94 4 Inch Needlenose Pliers, with Insets for Side View and Marking Detail, 1961.

Fig. 262 shows a pair of Snap-on model 94 4 inch needlenose pliers, marked with the "Vacuum Grip" logo and model number forged into the underside of one handle, with "Snap-on Tools" and "USA" plus an "I" date code for 1961 forged into the other.

The overall length is 4.5 inches, and the finish is polished steel, with pitting due to rust.

Fig. 263. Snap-on 94 4 Inch Needlenose Pliers, with Insets for Side View and Marking Detail, 1962.

Fig. 263 shows a slightly later pair of Snap-on model 94 4 inch needlenose pliers, stamped with the "Snap-on" logo and model number on the face, with "USA" and a "Z" date code for 1962 on the underside of the one handle.

The overall length is 4.6 inches, and the finish is polished steel.

Although these pliers are dated just one year after the previous figure, the handles no longer have the traditional "Vacuum Grip" gripping pattern, and the forged-in markings have been replaced by stamped markings.

Snap-on "Vacuum Grip" 96 6 Inch Needlenose Pliers

The next figures show two generations of the model 96 needlenose pliers.

Fig. 264. Snap-on "Vacuum Grip" 96 6 Inch Needlenose Pliers, with Insets for Side View and Marking Detail, 1957.

Fig. 264 shows a pair of Snap-on "Vacuum Grip" model 96 6 inch needlenose pliers, marked with "Snap-on Tools" and "USA" forged into the underside of one handle, with "Vacuum Grip" and "No. 96" forged into the other handle. The pliers are also marked with a forged-in "7" date code for 1957, plus a second stamped "8" date code for 1958.

The overall length is 7.2 inches, and the finish is polished steel.

The Snap-on catalogs refer to this model as 6 inch needlenose pliers, although the length is actually slightly longer than 7 inches. Earlier versions from Forged Steel Products were generally slightly under 7 inches in length.

Fig. 265. Snap-on 96 6 Inch Needlenose Pliers, with Insets for Side View and Marking Detail.

Fig. 265 shows a later pair of Snap-on model 96 6 inch needlenose pliers, marked with the Snap-on name forged into the underside of one handle, with "96" and "USA" forged into the other handle.

The overall length is 7.2 inches, and the finish is polished steel.

These pliers have dropped the "Vacuum Grip" name, but still retain the distinctive gripping pattern.

Snap-on 60C 8 Inch Short Needlenose Pliers

Fig. 266. Snap-on 60C 8 Inch Short Needlenose Pliers, with Inset for Side View, 1967.

Fig. 266 shows a pair of Snap-on 60C 8 inch short needlenose pliers, stamped with the "Snap-on" logo and model number, followed by "USA" and a "7" date code for 1967.

The overall length is 7.6 inches, and the finish is polished steel.

Snap-on "Vacuum Grip" HL-9 9 Inch Compound Leverage Diagonal Cutters

Fig. 267. Snap-on HL-9 9 Inch Compound Leverage Diagonal Cutters, with Insets for Side View and Marking Detail, 1958.

Fig. 267 shows a pair of Snap-on HL-9 9 inch compound leverage diagonal cutters, marked with "Snap-on" and "USA" stamped on the underside of one handle, with "Vacuum Grip" and "HL-9" on the other handle. The pliers are also marked with a stylized "8" date code for 1958 on the underside of the one handle.

The overall length is 9.1 inches, and the finish is black oxide.

Tongue-and-Groove Pliers

Snap-on 90 Tongue-and-Groove Pliers

Fig. 268. Snap-on 90 Tongue-and-Groove Pliers, with Insets for Handle Pattern and Marking Detail, 1959.

Fig. 268 shows a pair of Snap-on 90 tongue-and-groove pliers, stamped with a "Pat. No. 2622464" patent notice on the front, with "Vacuum Grip" and "USA" plus a date code for 1959 on the back side.

The overall length ranges from 9.2 inches closed to 9.7 inches fully extended. The finish is chrome plating.

The patent notice refers to patent #2,622,464, issued to W.V. Daugherty in 1952 with assignment to Utica Drop Forge & Tool.

Snap-on 90A Tongue-and-Groove Pliers

Fig. 269. Snap-on 90A Tongue-and-Groove Pliers, with Inset for Marking Detail.

Fig. 269 shows a pair of Snap-on 90A tongue-and-groove pliers, marked "USA" with a "Pat. No. 2622464" patent notice.

The overall length ranges from 9.1 inches closed to 9.6 inches fully extended. The finish is chrome plating.

The patent notice refers to patent #2,622,464, issued to W.V. Daugherty in 1952 with assignment to Utica Drop Forge & Tool.

Snap-on 91CP Tongue-and-Groove Pliers

Fig. 270. Snap-on 91CP Tongue-and-Groove Pliers, with Insets for Marking Detail, 1961.

Fig. 270 shows a pair of Snap-on 91CP tongue-and-groove pliers, stamped "USA" with a "1" date code for 1961, and with a "Pat. No. 2622464" patent notice. The back side has an etched marking "5120PWT0003" and "GSOOS50109", possibly a government inventory number.

The overall length ranges from 9.2 inches closed to 9.6 inches fully extended. The finish is plain steel with plastic handle grips.

The patent notice refers to patent #2,622,464, issued to W.V. Daugherty in 1952 with assignment to Utica Drop Forge & Tool.

Snap-on GCP-10 Grease Cap Pliers

Fig. 271. Snap-on GCP-10 Grease Cap Pliers, 1953.

Fig. 271 shows a pair of Snap-on GCP-10 grease cap pliers, designed for removing the grease cap from a wheel hub. The lower handle is stamped "Vacuum Grip" and "U.S.A.", with a stylized "3" date code for 1953.

The overall length is 10.7 inches, and the finish is plain steel, with pitting due to rust.

Adjustable Wrenches

In 1927 Snap-on began offering Diamond brand adjustable wrenches in its catalogs, and recommended them as "... the best tools of this type that are made." Snap-on continued to offer Diamond wrenches (later Diamalloy) throughout the 1930s, but sometime in the 1940s decided to offer adjustable wrenches as part of their Blue-Point line. The resulting wrenches had somewhat unusual dual markings, with the Blue-Point trademark on one side and "Snap-on Tools Corp." on the back side.

The Blue-Point adjustable wrenches turned out to be nearly identical to the Diamalloy wrenches, except for the name change, and it's probably safe to assume that these wrenches continued to be made by Diamond under contract for Snap-on.

Examples of the Diamond brand wrenches can be found in our article on the Diamond Calk Horseshoe Company.

Blue-Point 10 Inch Adjustable Wrench

Fig. 272. Blue-Point 10 Inch Adjustable Wrench, with Inset for Back Side Detail.

Fig. 272 shows a Blue-Point 10 inch adjustable wrench, marked on the front with "Forged Alloy Steel" and "Made in U.S.A." in raised letters, with "Snap-on Tools Corp." and "Kenosha, Wisconsin" on the back side.

The overall length is 10.1 inches, and the maximum opening is 1.2 inches. The maximum head thickness was measured at 0.55 inches.

The finish is chrome plating.

This wrench is nearly identical (except for markings) to the corresponding Diamond Diamalloy 10 Inch Adjustable Wrench.

Blue-Point 12 Inch Adjustable Wrench

Fig. 273. Blue-Point 12 Inch Adjustable Wrench, with Insets for Side View and Back Side Detail.

Fig. 273 shows a Blue-Point 12 inch adjustable wrench, marked on the front with "Forged Alloy Steel" and "Made in U.S.A." in raised letters, with "Snap-on Tools Corp." and "Kenosha, Wisconsin" on the back side.

The overall length is 12.2 inches, and the maximum opening is 1.4 inches. The maximum head thickness was measured at 0.70 inches.

The finish is chrome plating.

This wrench is nearly identical (except for markings) to the corresponding Diamond Diamalloy 12 Inch Adjustable Wrench.

Blue-Point 15 Inch Adjustable Wrench

Fig. 274. Blue-Point 15 Inch Adjustable Wrench, with Insets for Side View and Back Side Detail.

Fig. 274 shows a larger example, a Blue-Point 15 inch adjustable wrench with a tapered handle. The wrench is marked with the Blue-Point logo plus "Forged Alloy Steel" and "Made in U.S.A." forged into the front, with "Snap-on Tools Corp." and "Kenosha, Wisconsin" forged into the back side.

Both sides of the shank are also marked with the nominal size as "15" followed by double quote marks.

The overall length is 15.4 inches, and the maximum opening is 1.7 inches. The maximum head thickness was measured at 0.93 inches. The finish is chrome plating.

There's an interesting story behind this wrench that provides a useful maintenance tip as well. The wrench was purchased from a local used tool store for a very modest price, but with a catch — the adjusting knurl and pin were missing. The wrench seemed like a bargain assuming that replacement parts could be obtained from Snap-on, but as it turned out, the friendly local Snap-on dealer was no longer able to get parts for Blue-Point adjustable wrenches. A check for Diamond brand replacement parts also proved fruitless.

A solution to the problem came some time later while cleaning an old Diamond brand adjustable wrench. With the wrench disassembled, the screw pin holding the knurl was noted as being threaded on the inside end, a design also used by Crescent adjustable wrenches. (Other wrenches such as Utica have the threads on the outer end of the screw.)

A quick check confirmed that the Diamond screw pin was interchangeable with a Crescent model, and an online check (of the Cooper Tools website) showed that replacement parts were still available for Crescent brand adjustable wrenches. (But in the larger sizes only, 12 inches and up.) The Crescent part number was AC115PSK for the repair kit including the adjusting knurl, retaining pin, and spring.

To make matters even more convenient, the AC115PSK kit could be ordered online from Amazon at a small discount! A few days later the parts arrived by mail, and the old wrench was soon as good as new.

As a number of Alloy Artifacts readers have inquired about sources for repair parts for adjustable wrenches, hopefully this story will provide a good starting point. As some point we'll add a table giving further information on the interchangeability of parts for adjustable wrenches.

Gear Pullers

Snap-on offered a wide variety of gear pullers, hub pullers, and related pulling and pressing tools.

The CG-{250,270,300} Line

The CG-series were one of Snap-on's most versatile (and popular) lines of gear puller. These pullers were highly configureable for inside or outside pulls and included both two- and three-jaw yokes, with a selection of jaws available as well. The pressure screws for the series included a slide-hammer option.

The CG-250 and CG-270 pullers were first offered in the 1937 catalog under heading "Blue-Point Gear Pullers", and based on the illustration appeared to have been prototypes. The 1938 catalog listed the Blue Point CG-250 and CG-270 models in the familiar form.

Interestingly, all of the catalogs after 1938 listed the pullers as "Gear Pullers by Snap-on", although it's not known if the brand marking changed to Snap-on immediately.

By 1946 the CG-300 pullers had been introduced as the largest member of the family.

The CG-series tools were made by the C & G Wheel Puller Company, which at one point had the distinction of being Snap-on's longest serving supplier. The 1938 Cornwell patent #2,136,004 formed the basis of the CG-series pullers.

One detail to note is that the CG-series tools were seldom if ever marked with a date code, and since the parts of the pullers are interchangeable, an assembled tool may contain parts made at different points in time.

Blue Point CG-270 10 Ton Two-Jaw Gear Puller

Fig. 275. Blue Point CG-270 10 Ton Two-Jaw Gear Puller, with Insets for Marking Detail, ca. 1938.

Fig. 275 shows a Blue Point CG-270 two-jaw gear puller rated for 10 tons of pulling force.

The top of the pressure plate is marked with "Blue Point" and the model number forged into one side, with "Made in U.S.A." and "Patented" on the other side, as shown in the insets.

The "Patented" marking refers to patent #2,136,004, filed by A.L. Cornwell in 1937 and issued in 1938.

The overall length (as pictured) is 11.5 inches, and the finish is cadmium plating.

The photograph shows the puller set up for an outside pull on a larger gear. The jaws can be moved inwards for pulling on smaller objects, and can be reversed for an inside pull.

The CG-270 model was first listed in the 1937 Snap-on catalog in an apparent prototype version, but the 1938 catalog shows the CG-270 puller with the same construction as our example. The "Blue Point" marking on this example suggests production in 1938, if we assume that later tools were marked for Snap-on.

Exploded View of Blue Point CG-270 Gear Puller

One of the strengths of the "CG" gear puller line is that the parts are interchangeable within the family for the pulling capacity. This next figure shows the component parts of the CG-270 two-jaw puller.

Fig. 276. Exploded View of the Blue Point CG-270 Gear Puller, ca. 1938.

Fig. 276 shows an exploded view of the Blue Point CG-270 gear puller to illustrate the component parts.

The parts are, from left to right and top down, (two) CG-270-3 jaws, CG-270-6 spring, CG-270-7 adjusting nut, CG-270-5 pressure plate (or "washer"), CG-270-2 yoke, and CG-270-1 pressure screw.

Note that the yoke provides two semi-circular notches on each side to secure the jaws, allowing adjustment for a range of diameters.

This early pressure screw has a fixed point, but later production was provided with an insertable point.

Blue Point CG-270-3 7 Inch Gear Puller Jaw

Fig. 277. Blue Point CG-270-3 7 Inch Gear Puller Jaw, ca. 1938.

Fig. 277 shows one of the jaws from the Blue Point CG-270 gear puller, marked with the "CG-270-3" model number forged into one side.

The overall length is 7.3 inches, and the finish is cadmium plating.

Snap-on CG-273 10 Ton Three-Jaw Gear Puller

Fig. 278. Snap-on CG-273 10 Ton Three-Jaw Gear Puller, with Insets for Marking Detail.

Fig. 278 shows a [Snap-on] CG-273 three-jaw gear puller rated for 10 tons of pulling force, stamped with the model number on the pressure plate (see right inset), along with "Made in U.S.A." and "Patented" (not shown).

Interestingly, this tool is not marked with either of the Snap-on or Blue Point brands.

The overall length (as pictured) is 12.7 inches, and the finish is cadmium plating.

The CG-273 puller as pictured consists of three CG-270-3S jaws, a CG-270-6 spring, a CG-270-7 adjusting nut, a CG-273-5 pressure plate (literally a washer in this case), a CG-273-2 yoke, and a CG-270-11A pressure screw.

The "Patented" marking refers to patent #2,136,004, filed by A.L. Cornwell in 1937 and issued in 1938.

The photograph shows the puller set up for an outside pull on a larger gear. The jaws can be moved inwards for pulling on smaller objects, and can be reversed for an inside pull. The CG-270-3S jaws are similar to the previously shown CG-270-3 jaws, but have an extra long hook at the end.

Snap-on CG-270 10 Ton Two-Jaw Gear Puller with Slide Hammer

Fig. 279. Snap-on CG-270 10 Ton Two-Jaw Gear Puller with Slide Hammer, with Insets for Marking Detail, ca. 1953+.

Fig. 279 shows a Snap-on CG-270 two-jaw gear puller with a slide hammer pressure screw.

The pressure plate is marked with "Snap-on" and "CG-270" forged into one end, with "Made in U.S.A." and "Patented" forged into the other end, as seen in the two insets.

The overall length is approximately 25 inches, but will vary as the pressure screw is adjusted. The finish is cadmium plating.

The "Patented" marking refers to patent #2,136,004, filed by A.L. Cornwell in 1937 and issued in 1938.

The CG-270 puller as pictured consists of two CG-270-3 jaws, a CG-270-6 spring, a CG-270-7 adjusting nut, a CG-270-5 pressure plate, a CG-270-2 yoke, a CG-66-2 slide hammer, and a CG-270-8 slide pressure screw with an insertable point. (The puller is normally equipped with a 10-F cross-bar for adjustment, but it was removed for the photograph.)

Note that of the various parts in this set, only the jaws and the slide hammer are marked with their individual part numbers.

The presence of the CG-66-2 hammer indicates production in 1953 or later.

Snap-on [CG-270-5] Pressure Plate from CG-270 Puller

Fig. 280. Snap-on [CG-270-5] Pressure Plate from CG-270 Puller, with Inset for Bottom View.

Fig. 280 shows the Snap-on [CG-270-5] pressure plate from the CG-270 two-jaw gear puller shown above.

The top of the plate has forged-in markings for "Snap-on" and "CG-270" below the hole, with "Made in U.S.A." and "Patented" (inverted) above the hole.

The overall length is 5.2 inches and the width is 2.5 inches. The finish is cadmium plating.

Note that this tool bears the marking for the CG-270 gear puller as a set, but is not marked with its CG-270-5 part number.

Snap-on CJ-127A Rear Bearing Puller Attachment

Fig. 280B. Snap-on CJ-127A Rear Bearing Puller Attachment, with Insets for Side View and Marking Detail, 1997.

Fig. 280B shows a Snap-on CJ-127A rear bearing puller attachment, stamped with the Snap-on logo and "USA" on the body.

The body is also stamped with a stylized "7" for 1997 (not shown).

The overall length is 3.0 inches in the cross position and 3.5 inches extended. The finish is black oxide.

Specialty Tools

Special-Purpose Wrenches

Among the most common specialty tools are wrenches in unusual shapes or configurations, or with openings of unusual sizes. The tools allow access to bolts that are difficult or impossible to reach with standard tools.

Snap-on 2513-B Buick Head Bolt Wrench

Fig. 281. Snap-on 2513-B Buick Special Offset Box Wrench, with Insets for Side View and Back Side Detail, 1931.

Fig. 281 shows a Snap-on 2513-B Buick head bolt wrench, offering an unusual combination of box and crowfoot (open) ends, both with a 5/8 size.

The shank is stamped with "Snap-on Tools Inc." and the model number, with "Pat. No. 1424069-1" and a "*" date code for 1931 on the back side (not shown).

The overall length is 13.7 inches, and the finish is plain steel, with extensive pitting due to rust.

This wrench was found in a bucket of rusty tools at a flea market, literally caked with rust. Since it's hard to find this model in any condition, we were happy to pay the 50 cent price and treat the wrench to an electrolytic derusting session.

Blue Point S-9055 11/16 Specialty Offset Box-End Wrench

Fig. 282. Blue Point S-9055 11/16x11/16 Specialty Offset Box Wrench, with Insets for Side View and Back Side Detail, ca. Early to Mid 1930s.

Fig. 282 shows a rare Blue Point S-9055 11/16x11/16 specialty offset box wrench, stamped with the model number and "Blue Point Boxocket" and fractional size on the shank, and with "Pat. No. 1424069" on the back side.

The overall length is 9.8 inches, and the finish is plain steel.

We do not yet have a catalog reference for this model and so are unsure of its intended application. The Blackmar patent was typically marked from the early to mid 1930s, so that establishes a time frame for the tool.

Blue Point S-9594-B Chevrolet Cylinder Head Wrench

Fig. 283. Blue Point S-9594-B 3/4x3/4 Specialty Offset Box Wrench, with Insets for Side View and Back Side Detail, 1937.

Fig. 283 shows a Blue Point S-9594-B 3/4x3/4 offset box wrench for Chevrolet cyclinder head service. The shank is stamped "Blue Point" with the model number and fractional sizes, with a "7" date code for 1937 on the back side.

The overall length is 15.7 inches, and the finish is chrome plating.

The "-A" version of this wrench model is listed in the 1937 Snap-on catalog in the section for Chevrolet special tools, where it is recommended for cylinder head service.

Snap-on Leroi 88-21 Specialty Box-End Wrench

Fig. 284. Snap-on Leroi 88-21 3/4x3/4 Offset Box-End, with Inset for Side View.

Fig. 284 shows an unusual Snap-on specialty wrench, the Snap-on Leroi 88-21 3/4x3/4 offset box-end wrench.

The overall length is 10.6 inches, and the finish is cadmium plating.

Blue Point S-9859 Buick Special Offset Single-Box Wrench

Fig. 285. Blue Point S-9859 1-3/8 Buick Special Offset Box Wrench, with Insets for Side View and Back Side Detail, 1936.

Fig. 285 shows a Blue Point S-9859 1-3/8 offset single-box wrench designed for Buick axle-nut applications. The shank is stamped "Blue Point Boxocket" and "Patent App For", with a stylized "6" date code for 1936 on the back side.

The overall length is 12.5 inches, and the finish is chrome plating.

This wrench is listed in the 1933 Snap-on catalog for servicing the rear axle inner nut on various Buick models, including all 1929 models, models 50 and 60 of 1930, and models 60, 80, and 90 of 1931.

Snap-on S-9077 Ford Camshaft Gear Nut Wrench

Fig. 286. Snap-on S-9077 1-3/4 Specialty Wrench, with Inset for Side View, 1931.

Fig. 286 shows a Snap-on S-9077 1-3/4 specialty wrench, marked with the Snap-on logo and model forged into the shank. The face is also marked with overstamped date code symbols for 1931 and 1932.

The overall length is 7.9 inches, and the finish is cadmium plating.

This tool is listed in the 1933 Snap-on catalog as a Ford cam shaft gear nut wrench.

Blue Point CX-1820 9/16x5/8 Halfmoon Box Wrench

Fig. 287. Blue Point CX-1820 9/16x5/8 Halfmoon Box Wrench, with Inset for Back Side Detail, 1933.

Fig. 287 shows a Blue Point CX-1820 9/16x5/8 halfmoon box wrench, stamped "Blue Point Boxocket" with the model number and fractional sizes on one side, with "Pat No. 1424069" and a date code symbol for 1933 on the other side.

The overall length is 6.6 inches, and the finish is chrome plating.

Blue Point XA-16 1/2x1/2 S-Shaped Box Wrench

In the mid 1930s Blue Point introduced an unusual style of S-shaped box wrenches, designed with the same opening size on each end, but with opposite offset angles. (The more commonly for S-shaped box wrenches places different opening sizes on each end.)

Fig. 288. Blue Point XA-16 1/2x1/2 S-Shaped Box Wrench, with Inset for Back Side Detail, 1944.

Fig. 288 shows a Blue Point XA-16 1/2x1/2 S-shaped box wrench, stamped "Blue Point" with the size and model number on the shank, with an "E" date code symbol for 1944 on the back side.

The overall length is 7.3 inches, and the finish is cadmium plating.

Blue Point XA-18 9/16x9/16 S-Shaped Box Wrench

Fig. 289. Blue Point XA-18 9/16x9/16 S-Shaped Box Wrench, with Inset for Back Side Detail, 1934.

Fig. 289 shows a Blue Point XA-18 9/16x9/16 S-shaped box wrench, stamped "Blue Point" with the size and model number on the shank, with "Pat No. 1424069" and a stylized "4" date code for 1934 on the back side.

The overall length is 7.8 inches, and the finish is chrome plating.

Blue Point XA-20 5/8x5/8 S-Shaped Box Wrench

Fig. 290. Blue Point XA-20 5/8x5/8 S-Shaped Box Wrench, with Inset for Back Side Detail, 1934.

Fig. 290 shows a Blue Point XA-20 5/8x5/8 S-shaped box wrench, stamped "Blue Point" with the size and model number on the shank, with "Pat No. 1424069" and a stylized "4" date code for 1934 on the back side.

The overall length is 8.5 inches, and the finish is chrome plating, with extensive losses due to rust.

The back side is also stamped with an apparent "7" date code, suggesting that this wrench was sold a few years after it was made.

Snap-on SBX1416 7/16x1/2 S-Shaped Box-End Wrench

Fig. 291. Snap-on SBX1416 7/16x1/2 S-Shaped Box-End Wrench, with Inset for Back Side Detail, 1994.

Fig. 291 shows a Snap-on SBX1416 7/16x1/2 S-shaped box-end wrench, stamped with the Snap-on logo and fractional sizes on the shank, with "USA" and a stylized "4" date code for 1994 on the back side.

The overall length is 6.0 inches, and the finish is chrome plating.

Valve Tools

Snap-on 1/2-Hex Drive V-21 Valve Clearance Adjusting Tool

Fig. 292. Snap-on V-21 Valve Adjuster, 1940.

Fig. 292 shows a Snap-on V-21 valve clearance adjusting tool, marked with "Snap-on" and "Pat No. 1544520" forged into the handle, and with "Made in U.S.A." stamped near the end of the handle. A date code for 1940 can be seen on the lower part of the handle.

The handle length is 6.0 inches, and the knob has a diameter of 2.7 inches. The finish is chrome plating.

This tool is based on patent #1,544,520, issued to E.P. Putrow in 1925. Snap-on first offered this tool in 1927 as the No. 21 valve tool set, which included three special hex-drive sockets in sizes 1/2, 9/16, and 5/8. These sizes served for valve adjustments on most vehicles at the time.

By 1933 the valve tool set had become model V-21 and still retained the hex drive, and the special sockets were numbered V-160, V-180, and V-200 (see next figure). In later models the drive stud was changed to a standard 1/2 square drive, so that special sockets were no longer required.

Similar tools were made by other companies; see for example the Plomb 2034 Valve Adjustment Tool.

Snap-on 1/2-Hex Drive V-160, V-180, V-200 Valve Adjuster Sockets

Fig. 293. Snap-on V-xx0 1/2-Hex Drive Sockets for V-21, with Inset for Broaching.

Fig. 293 shows the 1/2-hex drive Snap-on sockets used with the V-21 valve adjustment tool. The models and sizes are, from the left, V-160 (1/2), V-180 (9/16), and V-200 (5/8).

The sockets are marked with date codes, 1930 for the left (V-160), 1929 for the middle (V-180), and 1940 for the right (V-200).

The inset at the top shows the 12-point broaching of the sockets.

Snap-on 1/2-Drive V-21A Valve Clearance Adjusting Tool

Fig. 294. Snap-on V-21A Valve Adjuster, 1944.

Fig. 294 shows a later Snap-on V-21A valve clearance adjusting tool using a standard 1/2 square drive stud. The handle has forged-in markings "Snap-on" and "Pat No. 1544520", with the model number stamped at the end and "Made in U.S.A." on the back side. An "E" date code for 1944 can be seen on the lower part of the handle.

The overall length is 6.5 inches, and the finish is plain steel with traces of cadmium plating.

Snap-on 1/2-Drive V-22 Valve Clearance Adjusting Tool

Fig. 295. Snap-on V-22 Valve Adjuster, with Insets for Marking Detail, 1954.

Fig. 295 shows the modern version of the valve adjuster, a Snap-on V-22 valve tool with a 1/2 square drive stud. The handle is stamped "USA" with a stylized "4" date code for 1954, and the model number is forged into the top of the knob.

The overall length is 8.3 inches, and the finish is polished chrome.

This tool uses a different mechanism to secure the socket to the drive stud. Instead of a spring-loaded detent ball mounted at the side, this version places the detent ball in the drive stud. But since the screwdriver shaft runs through the drive stud, there's no room for a spring behind the detent ball; instead, a notch in the screwdriver shaft allows the detent ball to retract. The socket is then installed, and becomes locked in place when the screwdriver shaft returns to its normal position.

Blue Point CF49 Valve Spring Lifter

Fig. 296. Blue Point CF49 Valve Spring Lifter, with Inset for Top View.

Fig. 296 shows a Blue Point CF49 valve spring lifter, marked "Kenosha Wis." and "Made in U.S.A." on the side, and with a "Pat. 2,119,128" patent notice.

The overall length is 9.6 inches, and the finish is black oxide.

The patent notice refers to patent #2,119,128, filed by I.J. Clark in 1937 and issued in 1938. This patent was used by other tool makers including OTC and Herbrand, and examples can be seen in the Herbrand VL-540 Valve Spring Lifter and OTC A-100 Valve Spring Lifter.

Brake Tools

Blue Point S-8652 Brake Wrench

Fig. 297. Blue Point S-8652 1/4x3/8 Brake Wrench, 1946.

Fig. 297 shows a Blue Point S-8652 1/4x3/8 open-end brake wrench, with markings "Blue-Point" and "Made in U.S.A." forged into the shank.

The overall length is 9.0 inches, and the finish is chrome plating.

The wrench is marked with a date code for 1946, which somewhat unusually is forged rather than stamped.

Blue-Point B-1351-A Brake Wrench

Fig. 298. Blue-Point B-1351-A 3/16x1/4 Brake Wrench, with Inset for Back Side Detail, 1949.

Fig. 298 shows a Blue-Point B-1351-A 3/16x1/4 open-end brake wrench, marked on the back side with "Made in U.S.A." and a date code for 1949.

The overall length is 8.5 inches, and the finish is chrome plating.

Snap-on B1461 Brake Spoon

Fig. 298B. Snap-on B1461 Brake Spoon, with Insets for Side View and Marking Detail, 1964.

Fig. 298B shows a Snap-on B1461 brake spoon, stamped with the "Snap-on" logo and "USA" plus a stylized "4" date code for 1964.

The overall length is 8.2 inches, and the finish is chrome plating.

Alignment Tools

Blue Point S-9460 Caster-Camber Obstruction Wrench

In the late 1940s Snap-on offered a series of Blue Point single-open obstruction wrenches for caster-camber (wheel alignment) applications, designed with thin heads and 90 degree offset angles to access the adjusting nuts. These are commonly found with curved handles and a nickel-plated finish, but we recently acquired an early example with a straight handle.

Fig. 299. Blue Point S-9460 1-7/16 Caster-Camber Obstruction Wrench, ca. 1940s.

Fig. 299 shows a Blue Point S-9460 1-7/16 obstruction wrench, marked "Blue Point" and "Made in U.S.A." in forged raised letters, and with the model stamped on a small raised panel.

The overall length is 8.9 inches, and the finish is plain steel.

Blue-Point S-9460-A Caster-Camber Obstruction Wrench

Fig. 300. Blue-Point S-9460-A 1-7/16 Caster-Camber Obstruction Wrench, 1949.

Fig. 300 shows a later Blue-Point S-9460A 1-7/16 obstruction wrench, stamped "Made in U.S.A." with a "9" date code for 1949.

The overall length is 8.1 inches, and the finish is nickel plating.

Blue-Point S-8271 Caster-Camber Obstruction Wrench

Fig. 301. Blue-Point S-8271 1-1/4 Caster-Camber Obstruction Wrench, 1949.

Fig. 301 shows a less common example of the caster-camber wrenches, a Blue-Point S-8271 1-1/4 obstruction wrench, stamped "Made in U.S.A." with a "9" date code for 1949.

The overall length is 8.2 inches, and the finish is nickel plating.

Blue-Point S-9462-A Caster-Camber Obstruction Wrench

Fig. 302. Blue-Point S-9462-A 1-13/32 Caster-Camber Obstruction Wrench, 1949.

Fig. 302 shows a Blue-Point S-9462-A 1-13/32 obstruction wrench, stamped "Made in U.S.A." with a "9" date code for 1949.

The overall length is 8.1 inches, and the finish is nickel plating.

Snap-on A-15 1/2-Drive Drag Link Driver

Fig. 303. Snap-on A-15 1/2-Drive Drag Link Driver, with Inset for Side View, 1952.

Fig. 303 shows a 1/2-drive Snap-on A-15 drag link driver, stamped "USA" with a stylized "2" date code for 1952.

The overall height is 1.4 inches, and the blade width is 1.2 inches (1-3/16 nominal). The finish is chrome plating.

Drag link drivers are designed for turning large slotted screws, typically for vehicle front-end applications. (Basically, they're oversized screwdrivers.) An earlier Snap-on example can be seen in the Snap-on A17 Drag Link Driver, and examples from other makers include the Blackhawk 49979 Drag Link Driver and Herbrand S-39 Drag Link Driver.

Snap-on A-17 1/2-Drive Drag Link Driver

Fig. 304. Snap-on A-17 1/2-Drive Drag Link Driver, with Inset for Side View, 1959.

Fig. 304 shows a 1/2-drive Snap-on A-17 drag link driver, stamped "USA" with a stylized "9" date code for 1959.

The overall height is 1.6 inches, and the blade width is 0.9 inches (15/16 nominal). The finish is chrome plating.

An earlier version of this tool can be seen in the Snap-on Early A17 Drag Link Driver.

Distributor Wrenches

Blue Point S-8558 Distributor Wrench

In the evolution of automotive technology, manufacturers sometimes found it necessary to place the distributor in an awkward place, with a clamping bolt virtually inaccessible without a special tool. Tool makers of course responded by making specialty distributor wrenches, typically a single box wrench with a suitably offset handle.

Fig. 305. Blue Point S-8558 1/2 Distributor Wrench, with Insets for Broaching and Marking Detail.

Fig. 305 shows a Blue Point S-8558 distributor wrench with a 1/2 inch box opening, marked with the Blue Point logo.

The overall length is 6.3 inches, and the handle offset is 3.5 inches. The finish is chrome plating.

The S-8558 wrench was listed in the 1939 catalog for Lincoln Zephyr distributor service, and may have been the first distributor specialty wrench offered by Snap-on.

By 1953 Snap-on was offering four models of distributor wrenches, and the count continued to grow in subsequent years.

Snap-on S-9470A Specialty Wrench

Fig. 306. Snap-on S-9470A Specialty Wrench, with Insets for Broaching and Marking Detail, 1962.

Fig. 306 shows a Snap-on S-9470A specialty wrench with a 1/2 inch box opening, marked with the Snap-on logo and "USA" forged into the shank, and with a stylized "2" date code for 1962.

The overall length is 12.2 inches, and the finish is chrome plating.

Torque Adapters

Blue Point S-9825 1/2-Drive 5/8 Torque Adapter

Fig. 307. Blue Point S-9825 1/2-Drive 5/8 Torque Adapter, with Insets for Marking and Broaching Detail, 1938.

Fig. 307 shows a Blue Point S-9825 1/2-drive 5/8 box-end torque adapter, marked with a date code for 1938.

The overall length is 6.2 inches, and the finish is chrome plating.

Blue Point S-9513 1/2-Drive 3/4 Wide-Sweep Torque Adapters

The next several figures show examples of the model S-9513 torque adapter, a wide sweep adapter with a 3/4 box end for servicing Chevrolet cylinder head bolts.

Fig. 308. Blue Point S-9513A 1/2-Drive 3/4 Wide-Sweep Torque Adapter, with Inset for Marking Detail, 1939.

Fig. 308 shows our earliest example, a 1/2-drive Blue Point S-9513A 3/4 wide-sweep torque adapter, marked "Made in U.S.A." with a date code for 1939.

The adapter has an offset of 2.5 inches and an overall length of 6.5 inches. The finish is chrome plating.

Note that the "A" suffix to the model number is stamped below the standard marking, suggesting that it may have been added later.

Fig. 309. Blue Point S-9513A 1/2-Drive 3/4 Wide-Sweep Torque Adapter, with Insets for Marking Detail, 1940.

Fig. 309 shows a slightly later Blue Point S-9513A torque adapter, marked "Made in U.S.A." with a date code for 1940.

The adapter has an offset of 2.5 inches and an overall length of 6.6 inches. The finish is chrome plating.

Fig. 310. Blue-Point S-9513C 1/2-Drive 3/4 Wide-Sweep Torque Adapter, with Insets for Marking and Broaching Detail, 1954.

A later version of the S-9513 adapter is shown in Fig. 310 at the left, a Blue-Point S-9513C torque adapter marked "U.S.A." with a date code for 1954.

The overall length is 6.3 inches, and the finish is chrome plating.

Snap-on M-4379 1/2-Drive Open-End Torque Adapter

Fig. 311. Snap-on M-4379 1/2-Drive 3/4 Open-End Torque Adapter, with Inset for Side View, 1956.

Fig. 311 shows a Snap-on M-4379 1/2-drive 3/4 open-end torque adapter, marked "U.S.A." with a date code for 1956.

The overall length is 5.3 inches, and the finish is chrome plating.

Snap-on S-8686 1/2-Drive 3/4 Box Torque Adapter

Fig. 312. Snap-on S-8686 1/2-Drive 3/4 Box Torque Adapter, with Inset for Side View, 1958.

Fig. 312 shows a Snap-on S-8686 1/2-drive 3/4 box-end torque adapter, stamped "USA" with a date code for 1958.

The overall length is 7.5 inches, and the finish is chrome plating.

The Snap-on catalog lists this tool as a caster-camber wrench for wheel alignment applications, specifically for servicing the 1957-1962 Ford, 1957-1958 Mercury and 1958 Edsel automobiles.

Snap-on Y-903 1/2-Drive Torque Adapter Extension

Fig. 313. Snap-on Y-903 1/2-Drive Torque Adapter Extension, with Inset for Marking Detail, 1954.

Fig. 313 shows a Snap-on Y-903 1/2-drive torque adapter extension with a 3/8-drive stud end, stamped "Snap-on" and "USA" with a stylized "4" date code for 1954.

The overall length is 13.4 inches, and the finish is cadmium plating.

The 3/8-drive stud is fitted with a locking pin (not shown) instead of a friction ball.

Stud Extractors

Snap-on A-50 1/2-Drive Stud Extractor

Fig. 314. Snap-on A-50 1/2-Drive Stud Extractor, with Inset for Top View, 1944.

Fig. 314 shows a 1/2-drive Snap-on A-50 stud extractor, stamped "Made in U.S.A." and "Pat-2024852", and with an "E" date code for 1944 following the model number.

The finish is cadmium plating, as expected for the wartime production date.

The stud extractor uses a distinctive rack-and-pinion mechanism described by patent #2,024,852, issued to G.R. Gagne in 1935. In operation, the stud to be removed (or installed) is gripped by the serrations in the notch of the transverse rod. As the drive connection is turned in the desired direction, the force is transmitted to the transverse rod to tighten the grip on the stud, thereby allowing it to be turned.

Snap-on LA-55 3/4-Drive Stud Extractor

Fig. 315. Snap-on LA-55 3/4-Drive Stud Extractor, with Insets for Construction and Marking Detail, 1938.

Fig. 315 shows a 3/4-drive Snap-on LA-55 stud extractor, stamped "Loxocket Trademark" with a stylized "8" date code for 1938.

The finish is chrome plating.

Spark-Plug Sockets

Snap-on 3/8-Drive PWA-1398 11/16 Inch Spark-Plug Socket

Fig. 316. Snap-on 3/8-Drive PWA-1398 11/16 Deep Spark-Plug Socket, with Insets for Broaching and Marking Detail.

Fig. 316 shows a 3/8-drive Snap-on PWA-1398 11/16 deep hex socket, stamped "Made in U.S.A." with the Snap-on logo and PWA model number.

The overall height is 2.9 inches, and the finish is cadmium plating.

The "PWA" model number prefix indicates production for Pratt-Whitney Aircraft. This socket was likely intended for spark-plug service.

Snap-on 1/2-Drive NAF-1110-13 1 Inch Spark-Plug Socket

Fig. 317. Snap-on 1/2-Drive NAF-1110-13 1 Inch Spark-Plug Socket, with Insets for Drive End and Broaching.

Fig. 317 shows a 1/2-drive Snap-on NAF-1110-13 1 inch deep socket, stamped with the Snap-on logo and "USN".

The overall height is 2.7 inches, and the finish is cadmium plating.

The upper inset shows the tapered drive end with a cross-bar hole. This socket was likely intended for spark-plug service.

Snap-on 1/2-Drive NAF-1110-14 11/16 Spark-Plug Socket with Rotating Ring

Fig. 318. Snap-on 1/2-Drive NAF-1110-14 11/16 Spark-Plug Socket, with Insets for Broaching and Marking Detail.

Fig. 318 shows a 1/2-drive Snap-on NAF-1110-14 11/16 deep socket with a distinctive rotating ring, stamped with the Snap-on logo and "USN".

The overall height is 2.8 inches, and the finish is cadmium plating.

The drive end is fitted with a cross-bar hole and has a knurled band, possibly for hand-turning. The rotating ring in the center is an unusual feature and may have been designed to center the socket in a recessed hole. The ring is retained by a machined ring on one side with a press-fit sleeve on the other.

Other Specialty Tools

Snap-on S-9156 1/2-Drive 1-13/32 Crowfoot Wrench

Fig. 319. Snap-on S-9156 1/2-Drive 1-13/32 Crowfoot Wrench, 1950.

Fig. 319 shows a 1/2-drive Snap-on S-9156 1-13/32 open-end crowfoot wrench, stamped "USA" with a "0" date code for 1950.

The finish is cadmium plating.

Snap-on 71-M 3/4-Hex Drive Ratchet

Fig. 320. Snap-on 71-M 3/4-Hex Drive Ratchet, with Inset for Back Side, 1951.

Fig. 320 shows a Snap-on 71-M ratchet fitted with a special 3/4 female hex drive gear. The forged-in markings on the shank are standard for this ratchet model, with the 71-M model number and Snap-on logo appearing on both sides, and with "USA" on the top and "Pat. 1854513" on the back side. The top side also has a stamped date code for 1951.

The overall length is 9.6 inches, and the finish is plain steel with traces of cadmium plating.

Whitworth Tools

Snap-on offered a reasonably full line of wrenches and socket tools in Whitworth sizing, the British Standard system for nut and bolt measurements. These tools were required for proper service on older British automobiles and motorcycles.

The available Whitworth tools included open-end, box-end, and combination wrenches, plus sockets in the smaller drive sizes.

Blue Point WXS-910 Offset Box Wrench

Fig. 321. Blue Point WXS-910 3/16Wx1/4W Offset Box Wrench, with Insets for Side View and Marking Detail, 1955.

Fig. 321 shows a Blue Point WXS-910 3/16Wx1/4W offset box-end wrench, marked with the Blue Point logo and sizes on the front, with "Made in USA" and a "5" date code for 1955 on the back side.

The overall length is 5.3 inches, and the finish is polished chrome.

Snap-on WOEX-120 Whitworth Combination Wrench

Fig. 322. Snap-on WOEX-120 3/8W Whitworth Combination Wrench, with Inset for Back Side Detail, 1955.

Fig. 322 shows a Snap-on WOEX-120 3/8W Whitworth combination wrench, stamped "USA" with a date code for 1955.

The overall length is 6.5 inches, and the finish is polished chrome.

Refrigeration Tools

The refrigeration industry began in the 1920s and grew rapidly in later decades.

Blue Point RX-12 Single Flare-Nut Wrench

Fig. 323. Blue Point RX-12 3/8 Single Flare-Nut Wrench, with Insets for Side View and Marking Detail, 1946.

Fig. 323 shows a Blue Point RX-12 3/8 single flare-nut wrench, stamped "Made in U.S.A." and "Patd RE No. 17417" with a "6" date code for 1946.

The overall length is 6.4 inches, and the finish is chrome plating.

Blue Point RX-14 Single Flare-Nut Wrench

Fig. 324. Blue Point RX-14 7/16 Single Flare-Nut Wrench, with Insets for Side View and Marking Detail, 1947.

Fig. 324 shows a Blue Point RX-14 7/16 single flare-nut wrench, stamped "Made in U.S.A." and "Patd RE No. 17417" with a "7" date code for 1947.

The overall length is 6.4 inches, and the finish is chrome plating.

Blue Point RX-40 Single Flare-Nut Wrench

Fig. 325. Blue Point RX-40 1-1/4 Single Flare-Nut Wrench, with Insets for Side View and Marking Detail, 1944.

Fig. 325 shows a Blue Point RX-40 1-1/4 single flare-nut wrench, stamped "Made in U.S.A." and "Patented Re-issue No. 17417" with an "E" date code for 1944.

The overall length is 8.0 inches, and the finish is cadmium plating.

Blue Point RX-2836 7/8x1-1/8 Double Flare-Nut Wrench

Fig. 326. Blue Point RX-2836 7/8x1-1/8 Double Flare-Nut Wrench, with Insets for Side View and Back Side Detail, 1947.

Fig. 326 shows a Blue Point RX-2836 7/8x1-1/8 double flare-nut wrench, stamped on the back side with "Made in U.S.A." and a stylized "7" date code 1947. (The date code marking is very faint, but resembles a "?" to the right of the "Made in U.S.A." marking.)

The overall length is 9.5 inches, and the finish is chrome plating with polished faces.