2a thread class right-hand 1.250" thread length hexagon head style 20 thread quantity per inch screw, cap, hexagon head zinc surface treated unf thread series
2a thread class right-hand 0.605" thread length hexagon head style 13 thread quantity per inch screw, cap, hexagon head per ss-s-85 type ii grade 5 chromium surface treated unc thread series
2a thread class right-hand 0.874" thread length hexagon head style 0.060" hole diameter 18 thread quantity per inch cadmium surface treated unc thread series