Concave Washers | McMaster-Carr

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System of Measurement

Screw Size

OD

ID

Washer Type

Material

Phosphor Bronze

Polyurethane Rubber

Stainless Steel

Thickness

Overall Height

Finish

Black Zinc Plated

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Shaft Diameter

Height

Performance

Corrosion Resistant

Electrically Insulating

Flame Retardant

High Temperature

Low Temperature

Tight Clearance

Vibration Resistant

Length

Countersink Angle

Color

Disc Spring Type

Specifications Met

Hardness

Rockwell 15N 80

RoHS

Compliant with Exemptions

DFARS Specialty Metals

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

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

Serration Location

Hole Diameter

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.)