Used on ah-60 helicopter, main rotor controls. 3a thread class 0.630" thread length hexagon head style 4.545" grip length 14 thread quantity per inch cotter pin hole in threaded section, chamfered end. unjf thread series
2a nut thread a thread class right-hand nut thread a 1.380" nut thread a thread length 26.880" overall length 24 nut thread a thread quantity per inch enamel shank surface treated unf nut thread a thread series
3a thread class right-hand 0.813" grip length 32 thread quantity per inch 156000 single pounds per square inch shear strength cadmium surface treated unjf thread series