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

Width

Thread Pitch

Flange Diameter

Thread Type

Metric Rounded Trapezoidal

Locking Type

Length

Fastener Strength Grade/Class

Flange Thickness

Thread Direction

Hex Nut Profile

Screw Size

Thread Spacing

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

2B999

EAR99

RoHS

Compliant

Compliant with Exemptions

REACH

Rivet Nut Body Shape

Thread Fit

Metric Trapezoidal Class 7H

Unified Standard Class 1B

Unified Standard Class 2B

Unified Standard Class 3B

Performance

For Material Thickness

4,007 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

Weld Nuts

Weld to metal surfaces to add permanent threads

351 products

Screw-Mount Nuts

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

27 products

Push Nuts

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

56 products

Rivet-Mount Nuts

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

42 products

Adhesive-Mount Nuts

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

162 products

Press-Fit Nuts

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

455 products

Clip-On Nuts

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

138 products

Snap-In Nuts

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

98 products

Rivet Nuts

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

434 products

Tube-Connecting Nuts

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

21 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

Threaded to separate or connect parts as well as position 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

Facility and Grounds Maintenance

Toilet Seat Fasteners

Secure toilet seat hinges to your toilet bowl

1 product

Fabricating and Machining

T-Slot Nuts

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

181 products

Clamps

Hold workpieces securely in place

2 products

Lathe Chuck Jaw Nuts

Secure jaws to a CNC lathe chuck

13 products

Electrical

Split-Bolt Connectors

Splice large wire sizes without special tools

17 products

Power Transmission

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

147 products

Ball Screws and Nuts

Internal ball bearings roll on screws for low friction when moving components at high speeds

34 products

Building and Machinery Hardware

Leveling Mount Inserts

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

81 products

T-Slotted Framing and Fittings

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

277 products

Locking-Slotted Framing and Fittings

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

3 products