Used on power plant/en. 3a thread class right-hand 1.093" thread length hexagon head style 40 thread quantity per inch screw hex head cruciform recess cadmium screw surface treated unjc thread series
3a thread class right-hand 1.000" thread length crowned hexagon head style 0.031" grip length 24 thread quantity per inch cadmium surface treated unf thread series
2a thread class left-hand 8.0" thread length oval head style 32 thread quantity per inch chromium screw surface treated threads can be coarse or fine unc thread series
3a thread class right-hand 0.870" thread length crowned hexagon head style 0.031" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.240" thread length flat fillister head style 20 thread quantity per inch screw, externally relieved body passivate surface treated