Check-Nut Wrenches | McMaster-Carr

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System of Measurement

Drive Size

Wrench Style

Wrench Opening Shape

12-Point Sure Grip

Overall Length

Material

Beryllium Copper

Stainless Steel

Sold As

Head Style

Drive Style

External 12-Point

External Pentagon

External Square

Head Thickness

Finish

Phosphate Coated

Square Drive Size

Circle Diameter

15/32" to 35/64"

25/32" to 3 15/16"

63/64" to 1 7/64"

1 3/16" to 1 17/64"

1 11/32" to 1 27/64"

1 3/8" to 2 3/8"

Spanner Wrench Style

Length

Ratcheting

Jaw Texture

Export Control Classification Number (ECCN)

RoHS

REACH

For Use With

Fire Hose Fittings

Rings, Flanges, and Collars

Round and Irregular Objects

Rounded Fasteners

Screws and Nuts

Pin Diameter

DFARS Specialty Metals

Jaw Style

Jaw Capacity

1 1/8" to 2 5/8"

Opening Angle

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763 Products

Fastening and Joining

Open-End Wrenches

Open-End Wrenches

Tighten and loosen fasteners from the top or the side

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

Pipe Wrenches

Grasp and turn pipe, conduit, and fittings

Pipe Wrench Nuts

Pipe Wrench Nuts

Replace nuts on pipe wrenches

Pipe Wrench Springs

Pipe Wrench Springs

Replace springs in pipe wrenches

Pipe Wrench Jaws

Pipe Wrench Jaws

Replace jaws on pipe wrenches

Fire Hose and Hydrant Wrenches

Fire Hose and Hydrant Wrenches

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

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

Combination Wrenches

Combination Wrenches

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

Pipe/Valve Wheel Wrenches

Pipe/Valve Wheel Wrenches

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

Water Meter Wrenches

Water Meter Wrenches

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

Fabricating and Machining

Locking Pliers

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

Adjustable Pliers

Adjustable Pliers

A range of jaw positions for turning fasteners and gripping workpieces

Containers, Storage, and Furniture

Wrench Organizers

Wrench Organizers

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

Sealing

Sealants

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

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