Box-End Wrenches | McMaster-Carr

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Wrench Style

System of Measurement

Drive Size

Wrench Opening Shape

Head Style

Drive Style

External 12-Point

External Pentagon

External Spline

External Square

Sold As

Ratcheting or Nonratcheting

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"

Finish

Head Thickness

Material

Stainless Steel

Appearance

Head Offset Angle

Wrench Type

Number of Pieces

Opening Angle

Number of Heads

REACH

RoHS

For Use With

Fire Hose Fittings

Screws and Nuts

Shut-Off Valves

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Jaw Type

Container Type

Fabric Roll-Up Pouch

Plastic Organizer

Plastic Roll-Up Pouch

Square Drive Size

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1,029 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

Drum Plug Wrenches

Drum Plug Wrenches

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

Wrench Heads

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

Fire Hose and Hydrant Wrenches

Fire Hose and Hydrant Wrenches

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

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

Shut-Off Valve Wrenches

Shut-Off Valve Wrenches

Turn hard-to-reach valves on gas lines, faucets, toilets, and sinks

Containers, Storage, and Furniture

Wrench Organizers

Wrench Organizers

Keep wrenches in order at your workstation or when carrying them around your facility

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