3a thread class right-hand 0.506" thread length flat countersunk head style 0.615" grip length 24 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.803" thread length spline extended washer head style 1.990" grip length 20 thread quantity per inch color white chromate surface treated unjf thread series
2a thread class right-hand 0.171" thread length flat countersunk head style 80 thread quantity per inch passivate screw surface treated unf thread series
2a thread class right-hand 0.217" thread length flat chamfer head style 20 thread quantity per inch extended point on thread end 0.171 in. dia by 0.158 in. long, and furnished with bail handle chromate surface treated unc thread series
3a thread class right-hand flush countersunk head style 0.313" grip length 32 thread quantity per inch 156000 single pounds per square inch shear strength nickel surface treated unjc thread series
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