3a thread class right-hand 0.710" thread length dished hexagon head style 2.178" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand flush countersunk head style 1.807" grip length 95000 single pounds per square inch shear strength cadmium or chromate surface treated unjf thread series
3a thread class right-hand 1.159" thread length dished hexagon head style 1.552" grip length 14 thread quantity per inch cadmium surface treated unjf thread series