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 6150-00-054-3518
NSN 5855-01-652-9185
NSN 5895-01-505-2115
NSN 6620-01-396-2149
NSN 6240-01-633-9357
NSN 5855-01-476-4219
NSN 5930-01-254-0621
NSN 5925-00-269-2685
NSN 5920-01-425-2336
NSN 7035-01-359-3915
NSN 6685-01-611-4058
NSN 5935-00-451-8843