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 6240-01-476-7935
NSN 5935-00-891-3261
NSN 4140-01-097-7320
NSN 6645-00-136-9451
NSN 6650-00-276-9838
NSN 6130-01-090-3954
NSN 6685-01-323-2136
NSN 6110-01-394-1333
NSN 6610-01-083-1528
NSN 5975-00-083-1433
NSN 5950-00-118-1117
NSN 5945-00-316-3389