Thumb Screw, Finish Zinc-Plated, Material Iron, Thread Size M8x1.25, Fastener Length 35 mm, Head Width 39 mm, Head Height 20 mm, Head Type Wing, Maximum Head Width 39 mm, Minimum Head Width Not Applicable, Maximum Head Height 20 mm, Minimum Head Height Not Applicable, System of Measurement Metric, Dimensional Standards DIN 316, Head Shape Rounded Wing