2a thread class right-hand 0.390" thread length flat countersunk head style 20 thread quantity per inch navy special project zinc screw surface treated unc thread series
2a thread class right-hand 0.250" thread length pan head style 32 thread quantity per inch cadmium screw surface treated with black iridite finish unc thread series
2a thread class right-hand 0.661" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
Used on shaft,rudder, 2040-01-320-4124, part number 905 wmec 562-002 piece 1,aboard 270 ft wmec coast guard vessels. item is made of aluminum bronze, astm B150, copper alloy uns C63000
Used on pacer dawn. 3a thread class right-hand 0.389" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 2.438" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 2.938" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
