Hardened Washers | McMaster-Carr

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System of Measurement

Screw Size

OD

Material

Stainless Steel

Thickness

0.005" to 0.024"

0.010" to 0.030"

0.014" to 0.033"

0.020" to 0.040"

0.030" to 0.050"

0.030" to 0.070"

0.040" to 0.060"

0.049" to 0.068"

0.050" to 0.080"

0.060" to 0.090"

0.064" to 0.083"

0.068" to 0.088"

0.070" to 0.090"

0.079" to 0.098"

0.080" to 0.099"

0.080" to 0.100"

0.084" to 0.104"

0.090" to 0.108"

Finish

Zinc Yellow-Chromate Plated

ID

Washer Type

Hardness

Rockwell 15N 80

Rockwell 15N 85

Fastener Strength Grade/Class

Washer Designation

General Purpose

Performance

Corrosion Resistant

Extreme Vibration Resistant

DFARS Specialty Metals

Specifications Met

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

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

REACH

Countersink Angle

How can we improve?

310 Products

Washers

Oversized Washers

Oversized Washers

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

General Purpose Washers

General Purpose Washers

Your go-to metal washer for every screw size

Structural Washers

Structural Washers

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

Undersized Washers

Undersized Washers

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

Other Products

Finishing Washers

Finishing Washers

Screw heads sit flush to prevent snagging and to create a neat, finished appearance

Lock Washers

Resist vibration to prevent fasteners from loosening

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