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 4140-01-005-0154
NSN 5925-01-647-4496
NSN 6650-00-205-6282
NSN 5985-01-317-9065
NSN 6105-01-219-5840
NSN 6130-01-530-3251
NSN 7035-00-421-8710
NSN 4140-01-417-3022
NSN 5835-01-436-1797
NSN 5915-01-008-6268
NSN 6135-01-493-8375
NSN 6650-01-199-4054