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 5925-01-317-6721
NSN 5930-00-674-2938
NSN 6130-01-220-9319
NSN 5930-01-492-8350
NSN 5905-01-447-2806
NSN 4140-01-643-3391
NSN 5910-01-534-0480
NSN 5996-01-566-8996
NSN 6150-01-336-8548
NSN 5960-01-328-8248
NSN 5910-00-209-0442
NSN 6610-01-559-5073