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 6240-00-107-1518
NSN 5855-01-453-1549
NSN 6650-00-375-6354
NSN 6620-01-532-4147
NSN 6650-00-468-8071
NSN 5925-01-475-4692
NSN 5945-01-408-6767
NSN 5975-00-752-7644
NSN 6135-01-430-3119
NSN 6150-01-187-4255
NSN 6320-00-994-0179
NSN 5895-00-801-9118