3a thread class right-hand 1.000" thread length double hexagon extended washer head style 1.125" grip length 18 thread quantity per inch unjf thread series
2a thread class right-hand 2.952" thread length oval head style 18 thread quantity per inch furnish neck, 0.100 inch thick, 0, 800 inch in dia., material GM1131-m type b fscm 11862 passivate surface treated unrc thread series
3a thread class right-hand 0.953" thread length hexagon head style 18 thread quantity per inch cadmium surface treated concentric hole unthreaded unf thread series
Used on truck tractor, 5-ton(m818,m931)truckcargodropside,5-ton. 2a thread class right-hand 0.639" thread length hexagon head style 18 thread quantity per inch unc thread series