Used on m1 tank family. 3a thread class right-hand 0.810" thread length hexagon head style 0.094" hole diameter 0.930" grip length 12 thread quantity per inch un thread series
3a thread class right-hand 2.645" thread length hexagon head style 0.870" grip length 28 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.890" thread length double hexagon w/hole head style 3.695" grip length 24 thread quantity per inch navy special project 2 holes intersecting 90 degrees apart cadmium surface treated unjf thread series
3a thread class right-hand 0.922" thread length hexagon head style 1.546" grip length 18 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 1.343" thread length hexagon head style 1.609" grip length 12 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.625" thread length hexagon head style 1.546" grip length 20 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.749" thread length hexagon head style 4.922" grip length 20 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 1.240" thread length hexagon head style 0.060" hole diameter 2.190" grip length 20 thread quantity per inch unjf thread series