A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 5975-00-481-3681
NSN 6685-00-679-7750
NSN 6685-01-384-6716
NSN 5925-00-955-0659
NSN 5975-01-548-7799
NSN 6220-01-543-6073
NSN 2925-01-166-4589
NSN 5895-00-456-0830
NSN 6685-01-315-0068
NSN 6685-00-152-9337
NSN 4140-01-045-1155
NSN 5935-01-025-7272