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 5996-00-816-9320
NSN 5990-01-354-8965
NSN 5965-01-187-3078
NSN 5835-01-263-1293
NSN 4140-00-493-4759
NSN 5935-01-058-4987
NSN 4140-00-753-9204
NSN 6240-00-350-8356
NSN 6320-01-495-0512
NSN 6150-00-596-9882
NSN 5935-00-809-6126
NSN 6135-01-458-0631