right-hand 0.615" thread length hexagon head style 0.047" hole diameter 0.940" grip length 32 thread quantity per inch MIN0r dia 0f thd 0.1487 in. max silver surface treated unf thread series
2a thread class right-hand 0.256" thread length flat countersunk head style 36 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.500" thread length flat chamfer head style 32 thread quantity per inch this screw has safety wire holes in the head. cadmium or chromate surface treated unf thread series
3a thread class right-hand 1.000" thread length hexagon head style 4.250" grip length 16 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 0.563" thread length flat countersunk head style 18 thread quantity per inch navy special project passivate surface treated unf thread series