Service Wrenches | McMaster-Carr

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15/16" to 1 1/8"

31/32" to 3 1/16"

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Magnesium Phosphate Coated

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15/16" to 1 1/8"

31/32" to 3 1/16"

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Adjustable Length

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DFARS Specialty Metals

Export Control Classification Number (ECCN)

Wrench Type

For Use With

CNC Retention Knobs

Fire Hose Fittings

Rings, Flanges, and Collars

Round and Irregular Objects

Screws and Nuts

Shut-Off Valves

Number of Heads

Relative Length

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3,826 Products

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Open-End Wrenches

Tight-Clearance Open-End Wrenches

Tight-Clearance Open-End Wrenches

Twist thin fasteners in cramped spots where bulky wrenches can't go

Open-End Wrenches

Open-End Wrenches

Slip on fasteners from the side to adjust them in tight spots

Tight-Clearance Open-End Wrench Sets

Tight-Clearance Open-End Wrench Sets

Twist a variety of thin fasteners in cramped spots where other wrenches won't fit

Strikable Open-End Wrenches

Strikable Open-End Wrenches

Strike the handle with a hammer to break stuck fasteners free

Open-End Wrench Sets for Army-Navy Fittings

Open-End Wrench Sets for Army-Navy Fittings

Securely tighten various AN (Army-Navy) fittings without rounding corners

Tight-Clearance Angled Open-End Wrenches

Tight-Clearance Angled Open-End Wrenches

Use 60°, 75°, or 80° angled heads to reach around obstacles

Tight-Clearance Angled Open-End Wrench Sets

Tight-Clearance Angled Open-End Wrench Sets

Keep an array of sizes handy to turn thin, awkwardly placed fasteners

Tight-Clearance Double Open-End Wrench Sets

Tight-Clearance Double Open-End Wrench Sets

Twist two different-sized, thin fasteners in tight nooks without changing your wrenches

Double Open-End Wrenches

Double Open-End Wrenches

Switch between two different-sized fasteners without swapping out your wrench

Double Open-End Wrench Sets

Double Open-End Wrench Sets

Switch between two different-sized fasteners without swapping out your wrenches

Open-End Wrenches for Army-Navy Fittings

Open-End Wrenches for Army-Navy Fittings

Securely tighten AN (Army-Navy) fittings without rounding corners

Miniature Open-End Wrench Sets

Miniature Open-End Wrench Sets

Take on a range of precision tasks with extra slim heads

Stubby Open-End Wrench Sets

Stubby Open-End Wrench Sets

Make full turns in spots without clearance for full-sized tools

Nonsparking Open-End Wrenches

Nonsparking Open-End Wrenches

Safely turn nuts and bolts in hazardous environments

Tight-Clearance Double Open-End Wrenches

Tight-Clearance Double Open-End Wrenches

Twist two different-sized, thin fasteners in tight nooks without changing your wrench

Sure-Grip Open-End Wrenches

Sure-Grip Open-End Wrenches

Get a firm hold on flare nuts and fittings to create leak-tight seals

Open-End Wrenches for Hole Alignment

Open-End Wrenches for Hole Alignment

Line up holes to insert bolts, then flip the wrench around to tighten

Miniature Open-End Wrenches

Miniature Open-End Wrenches

Take on precision tasks with extra slim heads

Stubby Open-End Wrenches

Stubby Open-End Wrenches

Make full turns in spots without clearance for full-sized tools

Sure-Grip Open-End Wrench Sets

Sure-Grip Open-End Wrench Sets

Get a firm hold on a variety of flare nuts and fittings to create seals

Other Products

Box Wrenches

Grip all sides of a fastener to prevent slipping

Combination Wrenches

Combination Wrenches

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

Spanner Wrenches

Spanner Wrenches

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

Wrench Heads

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

Water Meter Wrenches

Water Meter Wrenches

Turn meter couplings and shut-off valve nuts on water meters

Adjustable Wrenches

Adjustable Wrenches

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

Strap Wrenches

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

Shut-Off Valve Wrenches

Shut-Off Valve Wrenches

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

Plug Wrenches

Insert and remove recessed plugs in drain cleanout pipe

Sockets

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

Tool Sets

Secure fasteners and complete a variety of other maintenance tasks

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

Fire Hose and Hydrant Wrenches

Fire Hose and Hydrant Wrenches

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

Drain Wrenches

Install and remove drain traps and fittings, overflow outlets, and toilet inlet spuds

Ratchet Wrenches

Ratchet Wrenches

Adjust fasteners in tight spaces without removing and repositioning the wrench

Pipe Wrenches

Grasp and turn pipe, conduit, and fittings

Socket Wrenches

Socket Wrenches

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

Ball Joint Sockets

Ball Joint Sockets

Install and remove ball joints in suspension and steering systems

Drum Plug Sockets

Drum Plug Sockets

Turn with a ratchet wrench to install and remove screw-in drum plugs

Pipe/Valve Wheel Wrenches

Pipe/Valve Wheel Wrenches

Grip and turn pipe with one end and loosen valve wheels with the other

Ratchet Wrench/Screwdrivers

Ratchet Wrench/Screwdrivers

Switch between sockets and bits to turn a variety of fasteners with a single tool

Bit Sockets

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

Wrench Handles

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

Valve Wheel Wrenches

Valve Wheel Wrenches

Supply the leverage needed to turn hand wheels on large valves

Chain Wrenches

Grasp and twist pipe, tubing, and conduit, as well as irregularly shaped objects

Backup Wrenches

Backup Wrenches

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

Drum Plug Wrenches

Drum Plug Wrenches

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

Speeder Handles

Speeder Handles

Crank the handle to fasten nuts and bolts quickly

Fire Sprinkler Head Installation Tools

Fire Sprinkler Head Installation Tools

Install fire sprinkler heads without damaging them

Tank Wrenches

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

Oil Filter Sockets

Oil Filter Sockets

Twist with a ratchet wrench to adjust filters and other round objects in tight spots

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