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 6620-01-076-1340
NSN 6150-00-939-1459
NSN 6105-01-113-1446
NSN 5996-00-136-9651
NSN 5835-00-191-4793
NSN 5998-00-625-3860
NSN 6135-00-896-3187
NSN 6105-01-242-2461
NSN 5905-01-649-7934
NSN 5895-00-913-6448
NSN 5990-01-368-2604
NSN 6145-00-116-2939