3a thread class right-hand 0.500" thread length pan no. 2 head style 80 thread quantity per inch navy special project passivate screw surface treated unf thread series
3a thread class right-hand 0.691" thread length hexagon extended washer head style 18 thread quantity per inch cadmium or chromium surface treated unf thread series
3a thread class right-hand 0.828" thread length round w/wrench flats head style 18 thread quantity per inch concentric hole unthreaded unf thread series
3a thread class right-hand 0.276" thread length flat countersunk head style 0.677" grip length 32 thread quantity per inch cadmium surface treated unf thread series