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 5920-00-194-9732
NSN 6145-00-337-3188
NSN 5999-01-118-8855
NSN 5895-01-377-3308
NSN 6240-01-590-5789
NSN 6650-00-061-2232
NSN 5855-01-222-1242
NSN 6130-00-281-5978
NSN 5915-00-054-2206
NSN 6110-01-615-0405
NSN 6110-01-129-6924
NSN 6105-01-547-4218