Box-End Sockets | McMaster-Carr

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System of Measurement

Drive Size

Wrench Opening Shape

Wrench Style

Head Style

Drive Style

External 12-Point

External Square

Sold As

Ratcheting

Overall Length

4 1/4" to 6 3/4"

4 1/4" to 9 1/8"

4 1/4" to 18 1/2"

4 1/2" to 6 7/8"

4 1/2" to 8 1/8"

4 1/2" to 9 1/4"

Material

Stainless Steel

Head Thickness

Finish

Length

4 1/4" to 6 3/4"

4 1/4" to 9 1/8"

4 1/4" to 18 1/2"

4 1/2" to 6 7/8"

4 1/2" to 8 1/8"

4 1/2" to 9 1/4"

Number of Heads

RoHS

Export Control Classification Number (ECCN)

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Wrench Type

DFARS Specialty Metals

For Use With

Screws and Nuts

Head Offset Angle

Specifications Met

Fed. Spec. GGG-W-001405

Turn Required to Ratchet

Appearance

Number of Pieces

How can we improve?

420 Products

Fastening and Joining

Wrench Heads

Attach to your ratchet wrench and socket extension to turn fasteners where clearance is limited

Box Wrenches

Grip all sides of a fastener to prevent slipping

Tank Wrenches

Turn valve stems, regulator inlet nuts, and caps on welding tanks

Ratchet Wrenches

Ratchet Wrenches

Adjust fasteners in tight spaces without removing and repositioning the wrench

Drum Plug Wrenches

Drum Plug Wrenches

Install and remove screw-in drum plugs; also known as bung wrenches

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

Backup Wrenches

Backup Wrenches

Pair with a head and handle to create a wrench that keeps nuts from turning as you tighten bolts

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)