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 5930-01-487-4514
NSN 7035-01-392-9838
NSN 6240-01-631-4066
NSN 6645-00-017-8252
NSN 6220-00-465-2925
NSN 7035-01-606-5440
NSN 5925-01-067-5005
NSN 5930-01-228-2317
NSN 6150-00-930-5662
NSN 6110-00-112-1476
NSN 6240-00-994-4056
NSN 5945-01-195-1975