U-Drive Screw, Finish Zinc-Plated, Material Steel, Thread Size Not Applicable, Fastener Length 5/16 in, Thread Length Not Applicable, Head Width 0.172 in, Head Height 0.063 in, Tensile Strength Not Applicable, Head Type Round, Maximum Head Width 11/64 in, Minimum Head Width Not Applicable, Maximum Head Height 1/16 in, Minimum Head Height Not Applicable, System of Measurement Inch, Dimensional Standards ASME B 18.6. 3-2013, Drive No Drive, Head Material Steel, Head Shape Round. This item has been restricted from sale in the following state (s): []