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 5895-01-211-4156
NSN 5835-01-118-4690
NSN 5965-01-362-9005
NSN 5835-01-511-5337
NSN 6105-01-588-8509
NSN 5996-01-496-5949
NSN 6135-00-422-3967
NSN 6130-01-500-9480
NSN 5920-00-710-2781
NSN 5975-00-248-5590
NSN 5950-01-147-2833
NSN 5965-01-172-5724