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 5835-01-193-3175
NSN 5910-01-246-5461
NSN 5935-00-234-7771
NSN 5855-01-461-8169
NSN 5905-01-376-5271
NSN 5910-00-054-6647
NSN 6130-01-031-5057
NSN 5999-01-394-3659
NSN 5975-01-658-8631
NSN 5990-00-613-1350
NSN 7035-00-020-2227
NSN 6135-01-185-3614