Check-Nut Wrenches | McMaster-Carr

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For Use With

Rings, Flanges, and Collars

Round and Irregular Objects

Rounded Fasteners

Screws and Nuts

Valve Wheels

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

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Jaw Capacity

DFARS Specialty Metals

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762 Products

Fastening and Joining

Open-End Wrenches

Tighten and loosen fasteners from the top or the side

278 products

Spanner Wrenches

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

107 products

Wrench Heads

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

123 products

Pipe Wrenches

Grasp and turn pipe, conduit, and fittings

115 products

Pipe Wrench Nuts

Replace nuts on pipe wrenches

10 products

Pipe Wrench Springs

Replace springs in pipe wrenches

13 products

Pipe Wrench Jaws

Replace jaws on pipe wrenches

22 products

Fire Hose and Hydrant Wrenches

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

2 products

Sockets

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

11 products

Adjustable Wrenches

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

102 products

Combination Wrenches

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

5 products

Pipe/Valve Wheel Wrenches

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

1 product

Water Meter Wrenches

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

1 product

Fabricating and Machining

Locking Pliers

Clamp workpieces and lock them in place to keep your hands free

3 products

Adjustable Pliers

A range of jaw positions for turning fasteners and gripping workpieces

3 products

Containers, Storage, and Furniture

Wrench Organizers

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

13 products

Sealing

Sealants

Fill and seal gaps in metal, plastic, wood, and other materials

1 product