Mounting Washer

A mounting washer — zinc-plated, stainless, copper or bronze — is an essential element of a reliable bolted joint.

The part serves as a backing under the head of a bolt, stud or nut. Main functions:

• reinforcing the bearing area of the surface under the fastener;
• ensuring a high joint tightness;
• preventing the nut, screw or bolt from self-loosening;
• protecting the joint area from mechanical deformation;
• adjusting the distance between parts to set them in the required position.

Mounting washers are produced in various shapes, designs and sizes: flat, spherical, round, oval, square, with or without rubber gaskets.

Such joints are needed in any frame structures made of metal, wood or plastic. Besides construction, mounting washers are used in machine building, the food industry, auto and shipbuilding, medicine and pharmaceuticals.