3a thread class right-hand 0.408" thread length hexagon head style 0.072" grip length 32 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.165" thread length fillister head style 80 thread quantity per inch navy special project passivate screw surface treated unf thread series
3a thread class right-hand 0.500" thread length hexagon head style 1.172" grip length 24 thread quantity per inch passivate surface treated unf thread series
Used on 155mm,howitzer m185 cannon,tube assy. 8.514" inside diameter 8.764" outside diameter 0.940" major thickness split ring style internal ring 8.580 dia 0.033 deep on 0.220 radius
2a thread class right-hand 0.227" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unc thread series
2a nut thread thread class right-hand nut thread 0.750" stud thread thread length 2.269" overall length 20 nut thread thread quantity per inch cone point 0.144 in. long on nut end thread unf nut thread thread series
3a thread class right-hand 0.715" thread length hexagon head style 0.423" grip length 20 thread quantity per inch passivate surface treated unf thread series