Nut Washers | McMaster-Carr

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System of Measurement

Thread Size

Nut Type

Material

Finish

Cadmium Yellow-Chromate Plated

Corrosion-Resistant Coated

Zinc Yellow-Chromate Plated

Height

Thread Pitch

Width

Flange Diameter

Thread Type

Metric Rounded Trapezoidal

Screw Size

Length

Fastener Strength Grade/Class

Thread Direction

Performance

Electrical Insulating

Highly Twist Resistant

Panel Thickness

Hex Nut Profile

Thread Spacing

Locking Type

Flange Thickness

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

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

Yes

Export Control Classification Number (ECCN)

Base Width

4,340 Products

Fastening and Joining

Flange Nuts

The flange distributes pressure, so you don't need a washer

769 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

82 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

145 products

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

5 products

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

18 products

Weld Nuts

Weld to metal surfaces to add permanent threads

484 products

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

166 products

Screw-Mount Nuts

Mount with screws, rivets, and nails to add threads to a surface

28 products

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

82 products

Rivet-Mount Nuts

Add threads in hard-to-reach areas and materials that are too thin to be tapped

41 products

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

454 products

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

457 products

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

99 products

Tube-Connecting Nuts

Push inside tubes to join them with a threaded stud instead of welding

21 products

Clip-On Nuts

Slide onto the edge of thin panels to create a fastening point

142 products

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

91 products

Lock Washers

Resist vibration to prevent fasteners from loosening

36 products

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

265 products

Thread Adapters

Join threads of a different type, size, and gender

17 products

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

3 products

Standoffs

Separate, position, or connect components in assemblies

18 products

Snap-In Nut Tools

Compress the legs of snap-in nuts so they're easy to install and remove

3 products

Fabricating and Machining

T-Slot Nuts

Combine with setup studs or bolts to mount fixtures to machine tables

314 products

Clamping Screw Nuts

Combine with other coil-thread components to build a fast-threading clamping assembly

2 products

Lathe Chuck Jaw Nuts

Secure jaws to a CNC lathe chuck

13 products

Power Transmission

Lead Screw Nuts

Mate with lead screws to move components in a straight line

33 products

Precision Lead Screw Nuts

Pair with precision lead screws for accurate starts and stops in your assembly

114 products

Ball Screws and Nuts

Provide smooth travel where high speeds, accurate positioning, and repeatable movement are required

43 products

Building and Machinery Hardware

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

113 products

T-Slotted Framing Fasteners

Secure brackets and other accessories to T-slotted rails

261 products

Locking-Slotted Framing Fasteners

Secure brackets and other accessories to locking-slotted rails

3 products

Electrical Power, Networking, and Controlling

Wire Splices

Connect wires end to end to extend or repair a run

17 products

Facility and Grounds Maintenance

Toilet Seat Fasteners

Secure toilet seat hinges to your toilet bowl

1 product