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 5950-01-548-6273
NSN 6240-00-479-5057
NSN 6320-01-453-5152
NSN 5905-01-579-8092
NSN 5935-00-217-7959
NSN 5945-01-533-2085
NSN 5895-00-537-4231
NSN 5998-01-614-9674
NSN 4140-01-004-6462
NSN 6320-00-809-5744
NSN 6645-01-011-6459
NSN 5990-01-211-6136