ASME Washers | McMaster-Carr

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System of Measurement

Screw Size

Material

Stainless Steel

Washer Type

OD

Finish

Corrosion-Resistant Coated

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

ID

Thickness

0.010" to 0.013"

0.010" to 0.015"

0.010" to 0.016"

0.012" to 0.018"

0.014" to 0.018"

0.014" to 0.020"

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0.016" to 0.018"

0.016" to 0.021"

0.016" to 0.022"

0.016" to 0.025"

0.017" to 0.021"

0.018" to 0.023"

0.018" to 0.024"

0.020" to 0.025"

0.020" to 0.027"

0.020" to 0.060"

Fastener Strength Grade/Class

ASTM Grade A325

ASTM Grade A490

Washer Designation

General Purpose

Thread Size

Performance

Chemical Resistant

Corrosion Resistant

Electrically Insulating

High Temperature

Impact Resistant

Moisture Resistant

Tension Indicating

ASME Designation

DFARS Specialty Metals

Color

Hardness

Fastener Strength Rating

Military Specification

Army-Navy Specification

Military Specification

RoHS

Compliant with Exemptions

Length

REACH

Tooth Location

Internal and External

Certification

Shape

Export Control Classification Number (ECCN)

How can we improve?

2,568 Products

Washers

General Purpose Washers

General Purpose Washers

Your go-to metal washer for every screw size

SAE Washers

Meet SAE sizing standards and typically have smaller diameters than USS washers

ASME Washers

Meet ASME standards and come in regular, narrow, and wide diameters

Mil. Spec. Washers

Mil. Spec. Washers

Adhere to U.S. military standards for material and construction

USS Washers

Meet USS sizing standards and typically have larger diameters than SAE washers

Plastic Washers

Plastic Washers

Lightweight, nonconductive, and naturally rust resistant

Tension-Indicating Structural Washers

Tension-Indicating Structural Washers

Change color when you apply the correct tension to prevent overtightening

Ultra-High-Temperature Ceramic Washers

Ultra-High-Temperature Ceramic Washers

Withstand the highest temperatures of all our washers up to 3000° F

Structural Washers

Structural Washers

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

Oversized Washers

Oversized Washers

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

Hard Fiber Washers

Hard Fiber Washers

Least likely to scratch delicate mounting surfaces

Other Products

Lock Washers

Resist vibration to prevent fasteners from loosening

Retaining Rings

Retaining Rings

Hold components on a shaft

Hex Head Screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Spacers

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

Glassware Rinsers

Glassware Rinsers

Rinse the inside of glasses, tubes, or beakers with a simple press

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