3a thread class right-hand 0.453" thread length pan head style 32 thread quantity per inch cadmium screw surface treated internal drive ribbed unjc thread series
2a thread class right-hand 0.024" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 0.540" thread length fillister head style 0.037" hole diameter 40 thread quantity per inch anodize screw surface treated unc thread series
2a thread class right-hand 0.800" thread length fillister head style 0.037" hole diameter 40 thread quantity per inch anodize screw surface treated unc thread series