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 4140-00-985-0182
NSN 5920-01-501-9228
NSN 5965-01-273-3055
NSN 5920-01-221-9598
NSN 6240-00-204-9355
NSN 6145-01-480-3524
NSN 5920-01-423-8595
NSN 5855-01-283-3730
NSN 5910-01-415-5023
NSN 5905-01-517-3489
NSN 5960-01-649-1341
NSN 2925-01-454-2046