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 5945-00-367-4106
NSN 6105-01-381-2496
NSN 5945-01-337-8562
NSN
NSN 6620-01-054-9346
NSN 5920-01-550-9545
NSN 6110-01-381-1269
NSN 5835-01-596-9908
NSN 6645-00-108-6479
NSN 4140-01-384-2858
NSN 6645-01-116-3423
NSN 6650-00-765-3239