Washer Fasteners | McMaster-Carr

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System of Measurement

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Material

Washer Type

Thickness

Finish

Corrosion-Resistant Coated

Dyed

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Performance

Electrically Insulating

Color

Shaft Diameter

Specifications Met

Washer Designation

Fastener Strength Grade/Class

Thread Size

Hardness

Overall Height

DFARS Specialty Metals

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Compliant with Exemptions

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Export Control Classification Number (ECCN)

REACH

ASME Designation

Tooth Location

Internal and External

Width

Maximum Temperature

10,007 Products

Fastening and Joining

Washers

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

5,153 products

Lock Washers

Resist vibration to prevent fasteners from loosening

1,659 products

Insulating Washers

Isolate screws from electrical current and prevent corrosion from mating different metals

277 products

Sealing Washers

Prevent fluids from leaking around fasteners

752 products

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

265 products

Finishing Washers

Screw heads sit flush to prevent snagging and to create a neat, finished appearance

156 products

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

167 products

Cross-Bracing Washers

Connect cross-bracing rods or cables to structural beams; also known as hillside washers

20 products

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

64 products

Power Transmission

Thrust Bearings

Support loads parallel to the shaft with plain, ball, or roller bearings

839 products

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

103 products

Thrust Roller Bearing Washers

Adapt needle-roller thrust bearings for use on unhardened, unground surfaces

102 products

Material Handling

Tie-Down Washers

Angled sides align and hold tie-down straps

5 products

Facility and Grounds Maintenance

Faucet Washers

Seal faucet components so they don’t leak

24 products

Sink Drain Fitting Washers

Replace the washers in sink drain fittings

6 products

Electrical

Battery-Terminal Washers

Stop battery acid fumes from corroding terminal posts

1 product

Electrical-Terminal Washers

Prevent wires from slipping out from under screw heads to keep electrical connections intact

6 products

Electrical Enclosure Pole Mounts

Everything you need to secure enclosures to round poles or beams

14 products

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Building and Machinery Hardware

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

18 products

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

361 products

Fabricating and Machining

Clamp Holding Washers

Replace worn washers on open-arm toggle clamps to keep holding screws in place

12 products

Communication

Tag Washers

Bolt onto surfaces to mount tag rings and ties

18 products