M3 Washers | McMaster-Carr

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Screw Size

System of Measurement

Material

Stainless Steel

Washer Type

OD

ID

Thickness

0.022" to 0.042"

0.040" to 0.060"

0.052" to 0.072"

0.053" to 0.065"

0.060" to 0.080"

0.080" to 0.100"

0.081" to 0.093"

0.115" to 0.135"

0.2 mm to 0.3 mm

0.3 mm to 0.5 mm

Finish

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Specifications Met

Performance

Chemical Resistant

Corrosion Resistant

Electrically Insulating

High Temperature

Impact Resistant

Moisture Resistant

Washer Designation

General Purpose

ASME Designation

Color

Overall Height

Length

REACH

DFARS Specialty Metals

Passivation

Hardness

RoHS

Compliant with Exemptions

Fastener Strength Grade/Class

Tooth Location

Internal and External

Export Control Classification Number (ECCN)

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 499° F

500° F to 999° F

1,000° F or greater

Shape

Minimum Temperature

-249° F to -100° F

-99° F to -50° F

-49° F to -1° F

Greater than 0° F

How can we improve?

408 Products

Fastening and Joining

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

Lock Washers

Resist vibration to prevent fasteners from loosening

Finishing Washers

Finishing Washers

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

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Insulating Washers

Insulating Washers

Isolate screws from electrical current and prevent corrosion from mating different metals

Leveling Washers

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

Spacers

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

Magnets

Attract or repel metal objects to hang, secure, or position them

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