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 5915-01-449-0859
NSN 5975-01-092-8655
NSN 6610-00-186-9180
NSN 5975-01-448-2098
NSN 6150-01-073-4727
NSN 6220-01-512-7392
NSN 6650-00-726-4242
NSN 5999-01-344-8161
NSN 6130-00-289-7050
NSN 5990-01-463-2279
NSN 6645-01-629-9657
NSN 5945-00-737-1449