Steel Box Wrenches | McMaster-Carr

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Drive Size

Wrench Style

Wrench Opening Shape

Head Style

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Ratcheting

Drive Style

External 12-Point

External Pentagon

External Spline

External Square

Overall Length

3 1/4" to 5 1/2"

3 3/8" to 4 5/16"

3 1/2" to 5 3/8"

3 1/2" to 5 1/2"

3 19/32" to 8 41/64"

Finish

Head Thickness

Appearance

Relative Length

Material

Stainless Steel

Length

3 1/4" to 5 1/2"

3 3/8" to 4 5/16"

3 1/2" to 5 3/8"

3 1/2" to 5 1/2"

3 19/32" to 8 41/64"

Head Offset Angle

Number of Pieces

Wrench Type

Grade

Opening Angle

Number of Heads

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

RoHS

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

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920 Products

Fastening and Joining

Combination Wrenches

Combination Wrenches

Use the open end when tightening in cramped spaces and the box end when you need extra grip

Box Wrenches

Grip all sides of a fastener to prevent slipping

Wrench Heads

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

Tank Wrenches

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

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

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

Socket Adapters

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

Fire Hose and Hydrant Wrenches

Fire Hose and Hydrant Wrenches

Open and close hydrant caps, install sprinkler heads, and fasten fire hose fittings

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.)