U-Drive Screw, Grip Style Not Applicable, Type U-Drive Screw, Finish Zinc-Plated, Material Steel, Thread Size #6-5/16, Fastener Length 5/16 in, Thread Style Fully Threaded, Thread Length Not Applicable, Head Width 0.26 in, Head Height 0.103 in, Tensile Strength Not Applicable, Head Type Round, Maximum Head Width 17/64 in, Minimum Head Width Not Applicable, Maximum Head Height 7/64 in, Minimum Head Height Not Applicable, System of Measurement Inch, Drive Unslotted, Head Material Steel