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 6650-01-494-2084
NSN 5915-01-145-7763
NSN 6320-00-004-9158
NSN 5855-01-020-7982
NSN 6145-01-113-5282
NSN 5996-01-317-7289
NSN 5905-01-542-9115
NSN 5920-01-423-8595
NSN 6620-01-576-7723
NSN 6320-01-106-4414
NSN 5935-01-487-4679
NSN 6645-00-085-7603