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 6145-01-007-1742
NSN 5920-01-634-0250
NSN 5910-01-552-6266
NSN 6685-01-152-2846
NSN 6135-00-078-9931
NSN 5930-01-012-0039
NSN 5910-01-526-2733
NSN 5905-01-361-7585
NSN 6135-01-574-6577
NSN 5960-01-658-9538
NSN 4140-01-615-7325
NSN 4140-01-472-3727