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 5910-00-466-3252
NSN 5910-01-150-5462
NSN 5975-01-380-6495
NSN 6620-01-513-9674
NSN 5945-01-539-3095
NSN 6150-01-255-2416
NSN 6650-00-968-5700
NSN 5945-00-137-7557
NSN 2925-01-004-5627
NSN 6650-01-185-7896
NSN 5999-00-799-1013
NSN 5915-01-525-7731