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 5935-01-120-9250
NSN 6240-01-359-6024
NSN 5930-00-095-6564
NSN 5975-01-427-3521
NSN 5835-00-111-3419
NSN 6240-00-974-5925
NSN 4140-01-152-6600
NSN 6105-00-454-6270
NSN 7035-01-313-6973
NSN 6610-00-614-7943
NSN 6105-01-142-9123
NSN 5998-01-170-6870