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 5930-00-837-7001
NSN 2925-01-654-7971
NSN 5915-01-592-4639
NSN 5920-01-510-9921
NSN 6145-00-210-6257
NSN 5920-01-111-1214
NSN 6145-01-509-7273
NSN 6130-00-994-4533
NSN 6685-01-234-7127
NSN 4140-01-191-0219
NSN 5975-01-495-1343
NSN 2925-01-399-2765