Used on mh-53j,mh-60g acft. 0.8090" overall length part of adapter assembly, .50 calgun, e-13; used on machine gun, gau-18/a 22c solid, external flange one end
3a thread class right-hand 1.9690" overall length 0.2500" bore diameter 24 thread quantity per inch made from MS21151-8g; shank end chamfered; straight knurl over threads at neck cadmium exposed surfaces as mounted surface treated double row, staggered, ball unf thread series