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 7035-01-555-5260
NSN 2925-01-490-3884
NSN 6110-00-589-3134
NSN 5999-01-655-7186
NSN 5925-00-468-2757
NSN 2925-01-650-3412
NSN 6320-00-809-5744
NSN 5999-01-164-7987
NSN 6320-01-067-0474
NSN 6240-01-268-9372
NSN 5925-01-192-1452
NSN 5920-01-536-7173