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 5996-01-524-7723
NSN 5835-00-876-4544
NSN 5990-00-798-7794
NSN 6105-01-153-0778
NSN 6240-01-034-8934
NSN 6105-01-155-6962
NSN 6645-00-232-4070
NSN 6220-00-489-1440
NSN 5996-01-376-2156
NSN 6110-01-157-5506
NSN 6650-01-037-7637
NSN 5998-01-155-2310