Obstruction Wrenches | McMaster-Carr

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12-Point Sure Grip

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Square Drive Size

Ratcheting

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Magnesium Phosphate Coated

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Aluminum Bronze

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For Use With

Rings, Flanges, and Collars

Round and Irregular Objects

Screws and Nuts

Opening Angle

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1,165 Products

Fastening and Joining

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

Combination Wrenches

Combination Wrenches

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

Ratchet Wrenches

Ratchet Wrenches

Adjust fasteners in tight spaces without removing and repositioning the wrench

Spanner Wrenches

Spanner Wrenches

Grab onto holes and slots to turn collars, bearings, and other machine tool components

Open-End Wrenches

Open-End Wrenches

Tighten and loosen fasteners from the top or the side

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

Adjustable Wrenches

Adjustable Wrenches

Adjust the jaws to fasten different size nuts, bolts, or workpiece

Socket Wrenches

Socket Wrenches

Apply torque to turn nuts, bolts, and other fasteners without rounding the heads

Wrench Handles

Generate extra torque to loosen stubborn fasteners; also known as breaker bars

Strap Wrenches

Grip plastic and high-polished pipe, tubing, hand wheels, and filters without marring the surface

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

Bit Sockets

Turn fasteners with an internal drive style without slipping and damaging the drive

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