Square-Head Box Wrenches | McMaster-Carr

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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"

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Aluminum Bronze

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Fabric Roll-Up Pouch

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631 Products

Combination Wrenches

Combination Wrenches

Combination Wrenches

Your go-to wrenches for routine maintenance

Combination Wrench Sets

Combination Wrench Sets

Your go-to sets for routine maintenance

Ratcheting Combination Wrenches

Ratcheting Combination Wrenches

Turn nuts and bolts without having to remove and reposition your wrench

Ratcheting Combination Wrench Sets

Ratcheting Combination Wrench Sets

Turn a variety of nuts and bolts without having to remove and reposition your wrench

Reversible Ratcheting Combination Wrenches

Reversible Ratcheting Combination Wrenches

Switch from tightening to loosening with the flick of a lever

Reversible Ratcheting Combination Wrench Sets

Reversible Ratcheting Combination Wrench Sets

Wrenches switch from tightening to loosening with the flick of a lever

Spline Ratcheting Combination Wrenches

Spline Ratcheting Combination Wrenches

Turn hex, 12-point, and spline fasteners without repositioning your wrench

Spline Ratcheting Combination Wrench Sets

Spline Ratcheting Combination Wrench Sets

Turn hex, 12-point, and spline fasteners without repositioning your wrenches

Flex-Head Ratcheting Combination Wrenches

Flex-Head Ratcheting Combination Wrenches

Access hard-to-reach fasteners without needing to remove obstructions

Flex-Head Ratcheting Combination Wrench Sets

Flex-Head Ratcheting Combination Wrench Sets

Access a variety of hard-to-reach fasteners without needing to remove obstructions

Stubby Combination Wrenches

Stubby Combination Wrenches

Turn nuts and bolts in tight spaces

Stubby Combination Wrench Sets

Stubby Combination Wrench Sets

Turn a variety of nuts and bolts in tight spaces

Stubby Ratcheting Combination Wrenches

Stubby Ratcheting Combination Wrenches

Turn fasteners in tight spaces without removing and repositioning your wrench

Stubby Ratcheting Combination Wrench Sets

Stubby Ratcheting Combination Wrench Sets

Turn fasteners in tight spaces without removing and repositioning wrenches

Stubby Reversible Ratcheting Combination Wrenches

Stubby Reversible Ratcheting Combination Wrenches

The ultimate tool for ratcheting in tight spaces

Stubby Reversible Ratcheting Combination Wrench Sets

Stubby Reversible Ratcheting Combination Wrench Sets

The ultimate tool for ratcheting in tight spaces—in an array of sizes

High-Leverage Combination Wrenches

High-Leverage Combination Wrenches

Loosen stubborn nuts and bolts without breaking a sweat

Nonsparking Combination Wrenches

Nonsparking Combination Wrenches

Won't create sparks in hazardous environments

Nonsparking Combination Wrench Sets

Nonsparking Combination Wrench Sets

Wrenches that won't create sparks in hazardous environments

High-Visibility Combination Wrench Sets

High-Visibility Combination Wrench Sets

Stand out in tool kit clutter and under faint lighting on construction sites

Other Products

Box Wrenches

Grip all sides of a fastener to prevent slipping

Fire Hose and Hydrant Wrenches

Fire Hose and Hydrant Wrenches

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

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