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 5920-01-463-8386
NSN 2925-00-265-7539
NSN 6105-01-585-3556
NSN 6130-01-219-9065
NSN 6150-00-190-7874
NSN 6220-01-650-3844
NSN 5935-01-300-4043
NSN 5930-01-151-2887
NSN 5996-01-041-4189
NSN 5905-01-037-8131
NSN 5910-01-468-0221
NSN 2925-00-940-8231