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 5855-01-573-8397
NSN 6620-00-379-2856
NSN 5999-01-429-7757
NSN 5996-00-366-0233
NSN 5999-01-625-1487
NSN 5855-00-688-9954
NSN 5999-01-116-4501
NSN 6620-00-774-3638
NSN 6650-00-122-9452
NSN 5835-01-238-3381
NSN 5960-00-887-2618
NSN 6135-01-633-8502