Cup Washers | McMaster-Carr

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System of Measurement

Screw Size

ID

OD

Material

Phosphor Bronze

Polyurethane Rubber

Stainless Steel

Washer Type

Thickness

Shaft Diameter

Overall Height

Finish

Black Zinc Plated

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Hole Diameter

Height

Countersink Angle

Disc Spring Type

Diameter

Color

Working Load

Less than 1,000 lb.

1,000 lb. to 1,999 lb.

2,000 lb. to 2,999 lb.

3,000 lb. to 9,999 lb.

10,000 lb. or greater

Compressed Height @ Working Load

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

REACH

Deflection @ Working Load

Less than 0.125"

0.125" to 0.249"

0.25" to 0.499"

1 mm to 1.99 mm

2 mm to 4.99 mm

5 mm to 9.99 mm

10 mm or greater

Performance

Corrosion Resistant

Electrically Insulating

Vibration Resistant

Specifications Met

Hardness

How can we improve?

2,461 Products

Fastening and Joining

Finishing Washers

Finishing Washers

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

Lock Washers

Resist vibration to prevent fasteners from loosening

Washers

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

Insulating Washers

Insulating Washers

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

Power Transmission

Springs

Apply and absorb force with compression, die, extension, torsion, and disc springs

Bearing Lock Washers

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

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