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 6130-00-404-7926
NSN 5960-01-121-4105
NSN 5945-01-316-6692
NSN 5935-01-276-6534
NSN 5915-01-627-3622
NSN 6620-00-280-2874
NSN 5905-01-564-0749
NSN 5905-01-089-3137
NSN 5935-01-439-5248
NSN 5985-00-195-5542
NSN 6240-01-188-2745
NSN 6110-01-432-2442