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 5960-00-211-2105
NSN 5855-00-149-0766
NSN 6645-01-544-9475
NSN 5999-00-751-1188
NSN 5999-00-001-7455
NSN 5855-00-986-9708
NSN 5920-01-316-2140
NSN 5975-01-588-7234
NSN 6150-00-462-3537
NSN 5945-01-303-6361
NSN 6240-00-467-7295
NSN 6240-00-669-6652