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 5965-00-117-4214
NSN 5930-01-534-4109
NSN 5985-01-212-4421
NSN 5965-01-331-1644
NSN 6105-01-075-5562
NSN 6620-00-446-8048
NSN 6650-01-499-7471
NSN 2925-00-964-7128
NSN 6110-01-597-2086
NSN 5915-01-442-6711
NSN 5999-00-833-4362
NSN 5996-01-351-1558