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 6105-01-483-1506
NSN 5915-00-144-5548
NSN 5910-01-089-9767
NSN 5835-01-512-4834
NSN 4140-01-097-7320
NSN 5925-01-026-9649
NSN 2925-01-131-0469
NSN 5935-01-352-7270
NSN 6650-01-237-4689
NSN 5985-01-509-3429
NSN 6130-00-087-2577
NSN 6620-00-170-5296