2a thread class right-hand 0.866" thread length 16 thread quantity per inch sharp edge of head removed leaving 0.062 in. w; 0.224 in. min 0.244 in. max dia of shank; groove between shank phosphate surface treated unf thread series
3a thread class right-hand 1.375" thread length hexagon head style 2.000" grip length 14 thread quantity per inch cadmium surface treated uns thread series
3a thread class right-hand 1.000" thread length hexagon head style 7.374" grip length 11 thread quantity per inch cadmium surface treated unc thread series