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 5910-01-414-6968
NSN 5965-00-877-9197
NSN 5998-01-286-5619
NSN 4140-01-593-9905
NSN 5935-00-781-7409
NSN 6130-01-641-3490
NSN 5905-00-952-2149
NSN 5996-01-487-3733
NSN 5985-00-258-3205
NSN 6110-01-237-7079
NSN 5998-00-288-5533
NSN 6145-00-269-4271