2a thread class right-hand 0.656" thread length fillister head style 0.070" hole diameter 18 thread quantity per inch navy special project cadmium surface treated unc thread series
Used on propeller systems. 2a thread class right-hand 0.230" thread length flat fillister head style 28 thread quantity per inch screw, special head; critical dimensions unf thread series
3a thread class right-hand 0.985" thread length headless (setscrew) head style 28 thread quantity per inch 2 drilled holes 0.08 in.from drive end 0.044 in.MIN0.052 in.max unf thread series
3a thread class right-hand 0.271" thread length fillister head style 0.062" hole diameter 28 thread quantity per inch cadmium surface treated unf thread series
1a thread class right-hand 0.270" thread length hexagon head style 0.070" hole diameter 20 thread quantity per inch silver surface treated unc thread series
3a thread class right-hand 0.375" thread length headless (setscrew) head style 32 thread quantity per inch fleet ballistic missile quality control no. POSO911140 cadmium surface treated unf thread series
2a thread class right-hand 0.250" thread length fillister head style 0.062" hole diameter 20 thread quantity per inch cadmium surface treated unc thread series