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

USS washers generally have a larger ID and OD than SAE washers.

Designed for use with A325 structural screws, studs, and nuts, these washers are often used for construction and exterior building applications.

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

Low moisture absorption and good heat resistance make these washers suitable for wet and harsh environments.

With greater diameters and/or thicknesses than general purpose washers, these washers cover oversized holes or act as spacers and levelers. Clipped to fit where standard washers can’t, they won’t rotate when you position the flat edge against a flat surface.

As a screw is tightened, these washers flatten to add tension to the joint and prevent loosening from small amounts of vibration.

Internal teeth dig into the screw head while the smooth outside edge won't snag objects. Use with fasteners that have small heads, such as fillister and cheese head screws.

Also known as conical washers, these have a slightly cupped shape that gives them spring-like flexibility to grip tighter than split and tooth lock washers.

Bend one tab against the side of the mounting surface and the other tab against the flats on a bolt or nut to prevent both the fastener and washer from turning and loosening in high-vibration applications, such as a motor mount.

These wool felt washers can be soaked with oil to lubricate joints.