3a thread class right-hand 1.382" thread length double hexagon w/hole head style 2.250" grip length 14 thread quantity per inch bolt, twelve point - steel external wrenching cadmium surface treated uns thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.313" grip length 1030 single pounds per square inch shear strength chromate sleeve surface treated