Round Washers | McMaster-Carr

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Specifications Met

Hole Diameter

Washer Designation

Fastener Strength Grade/Class

Overall Height

Maximum Temperature

19,294 Products

Fastening and Joining

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

2,756 products

Washers

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

4,853 products

Lock Washers

Resist vibration to prevent fasteners from loosening

1,659 products

Cross-Bracing Washers

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

20 products

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

195 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

166 products

Sealing Washers

Prevent fluids from leaking around fasteners

752 products

Insulating Washers

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

277 products

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

4,754 products

Unthreaded Inserts

Reinforce, align, and adjust joints as you tighten a fastener

69 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

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

1,680 products

Building and Machinery Hardware

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

930 products

Vibration-Damping Mounts

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

18 products

Material Handling

Tie-Down Washers

Angled sides align and hold tie-down straps

5 products

Fabricating and Machining

Clamp Holding Washers

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

12 products

Electrical Power, Networking, and Controlling

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

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

3 products

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Conduit Reducing Washers

Shrink knockout sizes in outlet boxes or enclosures to connect smaller conduit

19 products

Communication

Tag Washers

Bolt onto surfaces to mount tag rings and ties

18 products