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 6105-00-939-9425
NSN 5935-01-546-2341
NSN 6620-01-550-2805
NSN 5999-01-211-7886
NSN 6610-00-327-7540
NSN 6620-00-635-7347
NSN 5998-01-506-8459
NSN 6320-01-054-3046
NSN 6240-00-151-7642
NSN 5960-01-425-1454
NSN 6220-01-608-4497
NSN 5910-01-240-8918