ISO Washers | McMaster-Carr

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Specifications Met

OSHA Compliant 29 CFR 1910.242

Clean Room Standard

Fed. Std. Class 10

Fed. Std. Class 100

Fed. Std. Class 1,000

Fed. Std. Class 10,000

System of Measurement

Screw Size

Material

Stainless Steel

Washer Type

OD

ID

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

Finish

Corrosion-Resistant Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Washer Designation

General Purpose

Performance

Corrosion Resistant

Static Eliminating

Fastener Strength Grade/Class

Color

Shaft Diameter

Hardness

Length

RoHS

Compliant with Exemptions

REACH

DFARS Specialty Metals

Shape

Export Control Classification Number (ECCN)

Fastener Strength Rating

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 499° F

Minimum Temperature

-99° F to -50° F

-49° F to 0° F

Greater than 0° F

High-Vacuum Connection Type

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953 Products

Washers

General Purpose Washers

General Purpose Washers

Your go-to metal washer for every screw size

Oversized Washers

Oversized Washers

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

Undersized Washers

Undersized Washers

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

Structural Washers

Structural Washers

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

Other Products

Bearing Washers

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

Swabs

Cotton, clean room, antistatic, sterile, and wet swabs

Blowguns

Direct a stream of air to clean equipment, parts, and spaces

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