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 5975-01-214-2570
NSN 5925-00-066-6898
NSN 5905-01-547-5721
NSN 5990-01-332-3623
NSN 6620-01-364-2103
NSN 5905-00-709-0601
NSN 5925-01-126-8188
NSN 5935-00-964-8513
NSN 5990-01-021-7303
NSN 5925-01-534-4479
NSN 5855-01-380-2708
NSN 5935-00-753-5101