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 5999-00-099-6889
NSN 5950-00-910-5015
NSN 6320-00-994-0179
NSN 5975-01-547-0715
NSN 6220-01-478-7747
NSN 5945-00-503-8487
NSN 6240-01-466-9112
NSN 2925-01-602-1975
NSN 6110-00-794-9739
NSN 5950-01-634-0677
NSN 6685-01-652-5544
NSN 2925-01-628-5941