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 6130-00-944-8781
NSN 5990-01-598-3251
NSN 5935-01-529-6085
NSN 5930-00-939-9128
NSN 5855-01-545-3659
NSN 6650-01-549-3099
NSN 6130-01-206-8843
NSN 5835-00-279-2887
NSN 6650-00-413-2696
NSN 6110-01-143-5909
NSN 5915-01-408-5980
NSN 6650-00-527-7451