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 6150-00-678-6124
NSN 5930-01-657-3720
NSN 6110-00-438-6686
NSN 5990-01-605-4769
NSN 7035-01-359-3915
NSN 6240-00-170-5302
NSN 5835-01-482-1591
NSN 5930-01-567-9677
NSN 5990-01-487-0871
NSN 5920-00-476-0528
NSN 6220-01-435-7582
NSN 5920-01-179-5289