2a thread class right-hand 0.733" thread length hexagon head style 18 thread quantity per inch w/header point cadmium or zinc surface treated unc thread series
2a thread class right-hand 0.719" thread length hexagon head style 16 thread quantity per inch w/header point cadmium or zinc surface treated unc thread series
2a thread class right-hand 1.313" thread length hexagon head style 16 thread quantity per inch w/header point cadmium or zinc surface treated unc thread series