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 5905-01-634-0595
NSN 5935-01-204-8263
NSN 7035-01-448-4740
NSN 6650-01-329-6350
NSN 5990-00-926-4324
NSN 6645-01-072-8367
NSN 6685-01-118-2807
NSN 4140-01-602-8454
NSN 5925-00-525-0194
NSN 6130-00-906-8547
NSN 5975-01-599-6054
NSN 5910-01-266-7562