1a thread class right-hand 0.544" thread length hexagon head style 0.070" hole diameter 28 thread quantity per inch nickel surface treated unf thread series
2a thread class right-hand 0.219" thread length flat chamfer head style 24 thread quantity per inch navy special project passivate surface treated uns thread series
2a thread class right-hand 0.625" thread length pan no. 2 head style 32 thread quantity per inch passivate screw surface treated fleet ballistic missile quality as identied by quality control no.poso 903942 unc thread series
3a thread class right-hand 1.093" thread length hexagon head style 3.438" grip length 16 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 1.000" thread length hexagon head style 3.188" grip length 12 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.522" thread length hexagon head style 0.907" grip length 18 thread quantity per inch chromium grip surface treated unf thread series
3a thread class right-hand 0.900" thread length hexagon head style 0.070" hole diameter 20 thread quantity per inch navy special project sixth dia from head 0.387 in. min cadmium surface treated unf thread series
3a thread class right-hand 0.440" thread length hexagon head style 24 thread quantity per inch navy special project cadmium or chromium surface treated unf thread series