Concave Washers | McMaster-Carr

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System of Measurement

ID

OD

Screw Size

Material

Phosphor Bronze

Polyurethane Rubber

Stainless Steel

Washer Type

Thickness

Shaft Diameter

Height

Hole Diameter

Overall Height

Finish

Black Zinc Plated

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Disc Spring Type

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

Performance

Corrosion Resistant

Electrically Insulating

Flame Retardant

Vibration Resistant

Length

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

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

Specifications Met

Hardness

Rockwell 15N 80

Color

Serration Location

How can we improve?

2,473 Products

Fastening and Joining

Lock Washers

Resist vibration to prevent fasteners from loosening

Finishing Washers

Finishing Washers

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

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

Spacers

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

Power Transmission

Disc Springs

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

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.)