Round Washers | McMaster-Carr

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System of Measurement

ID

1/64" to 11/16"

1/64" to 23/32"

1/64" to 1 1/8"

1/64" to 1 1/4"

Screw Size

OD

Material

Garolite G-10/FR4

Stainless Steel

Thickness

0.001" to 0.003"

0.002" to 0.004"

0.004" to 0.006"

0.005" to 0.006"

0.005" to 0.024"

0.005" to 0.030"

Washer Type

Length

Finish

Black Zinc Plated

Corrosion-Resistant Coated

Hot-Dipped Galvanized

Nickel Chrome Plated

Phosphate Coated

Zinc Flake Coated

Shaft Diameter

Performance

Abrasion Resistant

Chemical Resistant

Corrosion Resistant

Electrically Insulating

Finish-Your-Own

Flame Retardant

High Temperature

Color

Hardness

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Specifications Met

Export Control Classification Number (ECCN)

Thread Size

Hole Diameter

0.221" to 0.224"

0.245" to 0.248"

0.256" to 0.259"

0.259" to 0.263"

0.269" to 0.272"

0.281" to 0.284"

0.299" to 0.303"

Washer Designation

General Purpose

Fastener Strength Grade/Class

ASTM Grade A325

ASTM Grade A490

Overall Height

Maximum Temperature

Less than 200° F

200° F to 249° F

250° F to 499° F

500° F to 999° F

1,000° F or greater

Mount Type

Unthreaded Hole

Height

How can we improve?

19,267 Products

Fastening and Joining

Washers

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

Lock Washers

Resist vibration to prevent fasteners from loosening

Leveling Washers

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

Cross-Bracing Washers

Cross-Bracing Washers

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

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Cushioning Washers

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

Finishing Washers

Finishing Washers

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

Insulating Washers

Insulating Washers

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

Shims

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

Spacers

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

Unthreaded Inserts

Unthreaded Inserts

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

Power Transmission

Disc Springs

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

Thrust Bearings

Thrust Bearings

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

Bearing Lock Washers

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

Building and Machinery Hardware

Grommets

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

Vibration-Damping Mounts

Vibration-Damping Mounts

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

Material Handling

Tie-Down Washers

Tie-Down Washers

Angled sides align and hold tie-down straps

Electrical

Battery-Terminal Washers

Battery-Terminal Washers

Stop battery acid fumes from corroding terminal posts

Electrical-Terminal Washers

Electrical-Terminal Washers

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

Electrical Enclosure Fasteners

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

Heat-Shrink Tubing

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

Conduit and Conduit Fittings

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

Fabricating and Machining

Clamp Holding Washers

Clamp Holding Washers

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

Communication

Tag Washers

Bolt onto surfaces to mount tag rings and ties

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)