760-3521 is a rubber recess bumper with molded-in washer manufactured from black Buna-S synthetic rubber, designed to provide vibration isolation and impact protection for electronic equipment and chassis applications. The bumper features a height of 5/8 inch, an outer diameter of 5/16 inch, and a recess depth of 5/16 inch, with a washer thickness of 11/64 inch. It is compatible with 8-32 X 1/2 screws and is engineered to absorb shock and reduce vibration transmission to sensitive equipment. These bumpers are commonly used in cabinet mounting, equipment feet applications, and protective isolation in industrial and commercial electronic assemblies.