3a thread class right-hand 0.380" grip length 24 thread quantity per inch 95000 single pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand flush countersunk head style 0.563" grip length 24 thread quantity per inch 156000 single pounds per square inch shear strength mechanical lock feature on threads cadmium surface treated unjf thread series
