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 6130-01-299-2707
NSN 5855-01-450-0137
NSN 6610-01-456-1166
NSN 5855-01-006-1827
NSN 6105-01-424-1614
NSN 5990-00-484-1517
NSN 2925-01-629-9416
NSN 6240-00-968-9274
NSN 6650-01-441-7790
NSN 5910-00-886-5187
NSN 5975-01-206-9660
NSN 4140-01-204-2907