As you tighten your screw, the rolled collar compresses under the head to create an insulating barrier between a screw shank and a mating surface.

These washers are excellent electrical insulators.

These plastic washers are good electrical insulators.

Choose these washers for their adherence to strict military standards for material and construction.

These metric washers surpass most other plastic washers when it comes to withstanding chemicals, oil, and grease.

These washers hold up in blistering temperatures up to 3000° F.

Specially shaped tabs grip your screw shank tightly.

Plastic washers are good electrical insulators.