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 6105-01-384-2380
NSN 5996-00-768-2845
NSN 5895-01-260-2075
NSN 6645-01-588-5591
NSN 5945-00-915-4308
NSN 5975-00-462-2911
NSN 5990-01-633-9503
NSN 5945-00-610-6103
NSN 6645-00-602-5968
NSN 5945-01-125-4847
NSN 5905-01-090-2043
NSN 6650-01-471-6476