3a thread class right-hand 0.348" thread length flat countersunk head style 1.250" grip length 32 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.348" thread length flat countersunk head style 1.125" grip length 32 thread quantity per inch cadmium surface treated unjf thread series
Used on coast guard hu25 constant speed motor 1650-01-074-2890. 3a thread class right-hand 0.450" thread length crowned hexagon head style 28 thread quantity per inch known as webbler stop screw unjf thread series