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 6135-00-735-8530
NSN 6650-01-196-4667
NSN 5925-01-205-2853
NSN 5998-01-421-4797
NSN 5935-01-303-0943
NSN 6685-00-947-7579
NSN 5965-01-415-3865
NSN 5945-01-424-2316
NSN 5996-01-135-9006
NSN 5915-00-410-4164
NSN 6135-01-268-7056
NSN 5999-00-231-7584