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 5915-01-459-2109
NSN 6105-01-032-4706
NSN 5990-00-466-2952
NSN 6320-01-019-1028
NSN 6145-00-394-4511
NSN 4140-01-530-5162
NSN 5930-00-395-4688
NSN 2925-01-336-8019
NSN 5925-01-065-7975
NSN 6150-00-288-4430
NSN 5835-01-226-2337
NSN 5920-00-094-0655