2a thread class right-hand 0.250" thread length pan head style 32 thread quantity per inch navy special project enamel lusterless screw surface treated unc thread series
2a thread class right-hand 0.400" thread length truss head style 20 thread quantity per inch chromium or nickel screw surface treated unc thread series
2a thread class right-hand 0.319" thread length fillister head style 0.036" hole diameter 56 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.554" thread length pan no. 2 head style 56 thread quantity per inch navy special project cadmium screw surface treated unjc thread series
2a thread class right-hand 0.585" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
3a thread class right-hand 1.750" thread length flat chamfer head style 32 thread quantity per inch navy special project cadmium screw surface treated unjc thread series