ISO Standard Washers | McMaster-Carr

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System of Measurement

Screw Size

Material

Stainless Steel

Washer Type

OD

ID

Finish

Corrosion-Resistant Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Thickness

0.2 mm to 0.4 mm

0.3 mm to 0.4 mm

0.4 mm to 0.6 mm

0.5 mm to 0.6 mm

0.7 mm to 0.9 mm

0.8 mm to 1.2 mm

0.9 mm to 1.1 mm

1.3 mm to 1.7 mm

1.3 mm to 1.9 mm

1.4 mm to 1.8 mm

1.7 mm to 2.3 mm

1.8 mm to 2.2 mm

2.2 mm to 2.8 mm

2.3 mm to 2.7 mm

2.3 mm to 2.8 mm

2.4 mm to 3.6 mm

2.7 mm to 3.3 mm

Washer Designation

General Purpose

Performance

Corrosion Resistant

Ultra Low Friction

Fastener Strength Grade/Class

Hardness

Color

RoHS

Compliant with Exemptions

Shaft Diameter

Fastener Strength Rating

Length

REACH

DFARS Specialty Metals

Shape

Environment

Food and Beverage

Export Control Classification Number (ECCN)

Maximum Temperature

100° F to 249° F

250° F to 499° F

Width

Bearing Type

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863 Products

Washers

General Purpose Washers

General Purpose Washers

Your go-to metal washer for every screw size

Undersized Washers

Undersized Washers

Pair with fasteners that have narrow heads, such as cheese and socket head screws

Oversized Washers

Oversized Washers

Exaggerated diameters and thicknesses to cover large holes or to create gaps

Structural Washers

Structural Washers

Distribute pressure under structural screws and nuts in columns, joists, and I-beams

Other Products

Thrust Roller Bearing Washers

Thrust Roller Bearing Washers

Adapt needle-roller thrust bearings for use on unhardened, unground surfaces

O-Rings

Fit snugly into a groove between parts to create a leak-resistant seal

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

Thrust Bearings

Thrust Bearings

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

Tube and Tube Fittings

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

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