M20 Washers | McMaster-Carr

Filter by

System of Measurement

Screw Size

Material

Washer Type

Thickness

Finish

Corrosion-Resistant Coated

Zinc Yellow-Chromate Plated

Fastener Strength Grade/Class

Specifications Met

Washer Designation

Performance

Electrically Insulating

Hardness

Fastener Strength Rating

Length

REACH

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

Yes

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

1C998

EAR99

RoHS

Compliant

Compliant with Exemptions

Color

Overall Height

ASME Designation

Application

Tooth Location

Shape

153 Products

Fastening and Joining

Washers

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

71 products

Lock Washers

Resist vibration to prevent fasteners from loosening

42 products

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

10 products

Sealing Washers

Prevent fluids from leaking around fasteners

13 products

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

1 product

Shims

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

13 products

Power Transmission

Disc Springs

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

1 product

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

2 products