Cylindrical Counterbored Bumpers. With steel core and washer moulded inside. Counterbored hole to accept a socket head cap screw.

• Rubber bumper designed with a large, shallow hole on one side, allowing a fastener's head to be sunk below the surface for a flush or protected fit.
• Commonly used for impact protection on machinery, loading docks, and equipment, as well as for vibration dampening and to prevent sliding on surfaces.
• Also see Mounts - Buffers.