Washers provide a greater bearing surface under the fastener. This helps prevent a nut, bolt or screw from pulling through the base material.
The EPDM bonded washer, which combines a EPDM rubber to a steel substrate, is probably our highest volume washer product. General specifications are shown below.
Other common washer forms are also provided.
EPDM Bonded Washer
The sealing ability of an EPDM washer, with the structural performance of a steel washer. Vulcanized bonding eliminates separation of EPDM from the metal backing. This item is often ordered assembled on JC Grand self-drilling and metal piercing screws.
Standard Flat Washer
Used under the head of a bolt or nut to distribute the forces applied when tightening. The standard flat washer, with no special pattern or shape.
USS Flat Washer
Used under the head of a bolt or nut to distribute the forces applied when tightening. USS pattern is the most common type of flat washer.
SAE Flat Washer
Used under the head of a bolt or nut to distribute the forces applied when tightening. SAE pattern is a tighter fit on the bolt and a smaller outside diameter.
Fender Washers
Used under the head of a bolt or nut to distribute the forces applied when tightening. Fender washers have a large outside diameter.
Lock Washer
Lock washers place tension against a nut after tightening, to help prevent the nut from loosening.
Internal Tooth Lock Washer
Uses internal teeth for locking and tension. Less aggressive than external tooth with a smaller outside diameter.
Square Dock Washer
Used to distribute the forces applied when tightening. Square dock washers have a large square outside and are thicker than standard washers.
