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 5915-01-578-1072
NSN 5990-01-430-9177
NSN 5935-01-411-6300
NSN 6610-01-426-5090
NSN 5960-01-151-4518
NSN 5975-00-587-8861
NSN 6135-01-565-3284
NSN 5975-00-263-1759
NSN 6130-00-855-7498
NSN 6130-00-112-0716
NSN 5930-01-117-0161
NSN 6610-01-141-7014