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 5975-00-510-6815
NSN 5910-01-576-7023
NSN 5930-00-611-2109
NSN 5905-01-613-2994
NSN 5999-00-803-8784
NSN 6610-01-628-6044
NSN 2925-01-141-7563
NSN 5985-01-464-9610
NSN 5835-01-416-6455
NSN 5960-00-369-6990
NSN 6150-01-361-8133
NSN 6135-01-303-0295