3a thread class right-hand 0.314" thread length pan head style 32 thread quantity per inch cadmium screw surface treated internal drive ribbed unjc thread series
3a thread class right-hand 0.314" 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 0.398" thread length flat countersunk head style 72 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 0.320" thread length pan head style 32 thread quantity per inch aluminum screw surface treated identify with black dye or paint on threaded end unf thread series