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 5985-01-615-0352
NSN 6620-01-227-0433
NSN 6150-00-103-1957
NSN 5925-01-588-9444
NSN 6220-01-478-7210
NSN 5925-00-218-4933
NSN 6685-01-109-5156
NSN 5920-01-494-8710
NSN 6320-00-809-5744
NSN 7035-00-631-3782
NSN 5835-00-987-9341
NSN 5835-01-461-8184