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 5835-01-264-8782
NSN 6110-01-611-4687
NSN 5999-01-060-3736
NSN 6220-01-184-9829
NSN 5930-00-408-1678
NSN 7035-01-118-5861
NSN 6240-01-294-8937
NSN 6105-01-180-3904
NSN 5915-01-411-6933
NSN 5835-01-578-3443
NSN 5999-01-412-0251
NSN 5855-00-862-3345