3a thread class right-hand 0.516" thread length flat countersunk head style 0.812" grip length 24 thread quantity per inch cadmium surface treated unf thread series
2a thread class right-hand 0.322" thread length flat chamfer head style 0.046" hole diameter 32 thread quantity per inch passivate screw surface treated dia countersunk 90 deg by 0.060 in. dia, holes drilled 90 deg apart unf thread series
3a thread class right-hand 0.343" thread length hexagon head style 0.062" hole diameter 20 thread quantity per inch concentric hole unthreaded unf thread series
2a thread class right-hand 0.202" thread length flat countersunk head style 32 thread quantity per inch cadmium or zinc screw surface treated unc thread series
1a thread class right-hand 0.553" thread length fillister head style 0.046" hole diameter 32 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.500" thread length pan no. 2 head style 28 thread quantity per inch cadmium or zinc screw surface treated unf thread series
3a thread class right-hand 0.220" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated longitudinal hole drilled in shank 0.148 in. to 0.155 in. dia by 0.100 in. to 0.120 in. deep unf thread series
3a thread class right-hand 0.625" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unf thread series
