3a thread class right-hand 0.325" thread length oval countersunk head style 32 thread quantity per inch oxide film screw surface treated painted area beige color no. 23531 fed std 595 unc thread series
2a thread class right-hand 0.429" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.545" thread length flat chamfer head style 0.036" hole diameter 40 thread quantity per inch cadmium surface treated unc thread series
2a thread class right-hand 0.089" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.466" thread length fillister head style 28 thread quantity per inch slot in shank end 0.015 in. min 0.025 in. max w 0.260 in. max depth cadmium surface treated unf thread series
2a thread class right-hand 1.750" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 1.200" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 0.200" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 0.163" thread length flat countersunk head style 80 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.688" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unc thread series
