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 5950-00-816-9747
NSN 5925-01-469-6667
NSN 5999-01-300-2646
NSN 5855-00-147-2508
NSN 5930-01-492-7272
NSN 5835-00-770-2843
NSN 5895-00-472-3320
NSN 5915-00-242-1949
NSN 5965-00-161-3954
NSN 6620-01-258-2570
NSN 5960-01-408-3702
NSN 5925-01-351-5542