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 6320-01-527-0211
NSN 6610-01-437-0961
NSN 5975-00-126-5724
NSN 2925-00-982-0409
NSN 5930-01-143-9164
NSN 5930-00-329-5813
NSN 6150-01-080-5333
NSN 5935-01-212-8004
NSN 5960-00-633-7670
NSN 6110-01-467-4693
NSN 4140-01-481-6115
NSN 5950-01-096-8111