Insulator Washers | McMaster-Carr

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System of Measurement

Screw Size

ID

OD

Material

18-8 Stainless Steel

Thickness

0.001" to 0.003"

0.002" to 0.004"

0.004" to 0.006"

0.005" to 0.006"

0.008" to 0.012"

0.009" to 0.012"

0.010" to 0.020"

0.012" to 0.018"

0.013" to 0.017"

0.014" to 0.016"

0.015" to 0.025"

0.016" to 0.025"

0.017" to 0.023"

0.018" to 0.022"

Washer Type

Color

Length

Sleeve Height

Sleeve OD

Performance

Abrasion Resistant

Chemical Resistant

Electrically Insulating

Heavy Vibration Resistant

High Temperature

Impact Resistant

Low Temperature

Moisture Resistant

Overall Height

Maximum Temperature

Less than 200° F

200° F to 249° F

250° F to 499° F

500° F to 999° F

1,000° F or greater

Hardness

RoHS

Compliant with Exemptions

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Minimum Temperature

-250° F or less

-249° F to -100° F

-99° F to -50° F

-49° F to 0° F

Greater than 0° F

Finish

Specifications Met

Edge Type

Tensile Strength

Less than 10,000 psi

10,000 psi to 11,999 psi

12,000 psi to 19,999 psi

20,000 psi to 49,999 psi

50,000 psi or greater

Military Specification

MIL-P-46183 Type 1

Sold As

How can we improve?

3,747 Products

Fastening and Joining

Insulating Washers

Insulating Washers

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

Washers

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

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Cushioning Washers

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

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

Spacers

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

Fastener Assortments

Fastener Assortments

Stay prepared by keeping fasteners in common sizes and materials on hand

Building and Machinery Hardware

Vibration-Damping Mounts

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

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