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 5996-00-081-8057
NSN 5998-00-679-4001
NSN 6135-01-545-6582
NSN 5910-00-816-9909
NSN 6105-01-392-1539
NSN 5905-00-353-1659
NSN 5925-01-188-7630
NSN 6150-01-023-8352
NSN 5935-01-117-5246
NSN 5930-01-413-5009
NSN 5905-01-317-3027
NSN 5965-01-440-1213