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 6145-00-868-4677
NSN 6650-00-986-6495
NSN 5915-01-564-9258
NSN 6150-01-588-6528
NSN 5950-01-343-0942
NSN 6610-01-302-6347
NSN 6135-01-322-4655
NSN 6105-00-610-0538
NSN 5999-00-398-1583
NSN 6130-00-220-2151
NSN 5935-01-359-4827
NSN 5990-01-465-9235