M8 Washers | McMaster-Carr

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System of Measurement

Screw Size

Material

Stainless Steel

Washer Type

OD

ID

Thickness

0.022" to 0.042"

0.043" to 0.053"

0.046" to 0.078"

0.052" to 0.072"

0.070" to 0.090"

0.080" to 0.090"

Finish

Chromate Conversion Coated

Corrosion-Resistant Coated

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Specifications Met

Washer Designation

General Purpose

Performance

Abrasion Resistant

Chemical Resistant

Corrosion Resistant

Electrically Insulating

High Temperature

Impact Resistant

Moisture Resistant

Precision Adjust

Stress Resistant

Color

Hardness

Fastener Strength Grade/Class

Overall Height

RoHS

Compliant with Exemptions

Length

REACH

Fastener Strength Rating

Shape

DFARS Specialty Metals

Export Control Classification Number (ECCN)

For Maximum Screw Size

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

Passivation

Backing Type

How can we improve?

291 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

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Finishing Washers

Finishing Washers

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

Leveling Washers

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

Insulating Washers

Insulating Washers

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

Cushioning Washers

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

Spacers

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

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

Unthreaded Inserts

Unthreaded Inserts

Reinforce, align, and adjust joints as you tighten a fastener

Magnets

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

Power Transmission

Bearing Lock Washers

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

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