ASME B18.21.1 Washers | McMaster-Carr

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Rockwell C40 to Rockwell C50

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1,578 Products

Washers

General Purpose Washers

Your go-to metal washer for every screw size

46 products

SAE Washers

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

187 products

ASME Washers

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

288 products

Mil. Spec. Washers

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

88 products

USS Washers

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

188 products

Plastic Washers

Lightweight, nonconductive, and naturally rust resistant

72 products

Structural Washers

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

4 products

Oversized Washers

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

5 products

Ultra-High-Temperature Ceramic Washers

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

2 products

Hard Fiber Washers

Least likely to scratch delicate mounting surfaces

1 product

Other Products

Lock Washers

Resist vibration to prevent fasteners from loosening

677 products

Hex Head Screws

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

20 products