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 5975-01-460-9823
NSN 5930-01-046-6424
NSN 6645-01-568-7517
NSN 5835-01-484-4698
NSN 6110-00-433-3070
NSN 6135-01-546-4588
NSN 6130-00-480-3239
NSN 5935-01-459-0780
NSN 5960-01-604-1158
NSN 7035-00-153-3826
NSN 5835-00-180-7555
NSN 2925-01-525-8212