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 5990-00-825-7335
NSN 5915-00-603-5719
NSN 5920-00-752-0458
NSN 6240-01-351-6729
NSN 5930-00-347-4839
NSN 5975-01-541-5283
NSN 5985-00-661-2263
NSN 5910-01-014-3350
NSN 6620-01-106-3553
NSN 5835-01-132-5894
NSN 4140-00-536-9186
NSN 5996-01-238-7973