Nut Washers | McMaster-Carr

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System of Measurement

Thread Size

Material

Nut Type

Finish

Cadmium Yellow-Chromate Plated

Corrosion-Resistant Coated

Zinc Yellow-Chromate Plated

Height

Thread Pitch

Width

Flange Diameter

Thread Type

Metric Rounded Trapezoidal

Length

Screw Size

Locking Type

Fastener Strength Grade/Class

Thread Direction

Hex Nut Profile

Flange Thickness

Thread Spacing

Performance

RoHS

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

Base Width

Thread Fit

Metric Trapezoidal Class 7H

Unified Standard Class 1B

Unified Standard Class 2B

Unified Standard Class 3B

Panel Thickness

4,174 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

Cap Nuts

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

18 products

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

5 products

Screw-Mount Nuts

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

28 products

Weld Nuts

Weld to metal surfaces to add permanent threads

351 products

Push Nuts

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

65 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

433 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

Adhesive-Mount Nuts

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

166 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

143 products

Washers

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

85 products

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

265 products

Lock Washers

Resist vibration to prevent fasteners from loosening

36 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

Lathe Chuck Jaw Nuts

Secure jaws to a CNC lathe chuck

13 products

Clamping Screws

Apply pressure through a flat-tipped screw to hold material in place

2 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

41 products

Facility and Grounds Maintenance

Toilet Seat Fasteners

Secure toilet seat hinges to your toilet bowl

1 product

Building and Machinery Hardware

Leveling Mount Inserts

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

113 products

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

265 products

Locking-Slotted Framing and Fittings

Make platforms, bases, and other structures that stand up to more movement than T-slotted framing

3 products

Electrical

Wire Splices

Connect wires end to end to extend or repair a run

17 products