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 5920-01-632-4842
NSN 5895-00-705-9156
NSN 5965-01-027-6554
NSN 6150-01-444-1487
NSN 5910-01-443-1910
NSN 5895-01-074-7902
NSN 6150-00-760-7688
NSN 5990-00-281-4164
NSN 5998-01-065-5782
NSN 6130-01-535-4128
NSN 5996-00-432-5171
NSN 6135-01-399-8230