Socket Set Screw, Head Type Headless, Point Type Cup, System of Measurement Metric, Thread Size M8x1.25, Overall Length 20 mm, Drive Type Socket, Drive Size 4 mm, Material Steel, Finish Black Oxide, Pack Size Small Pack, Decimal Equivalent 0.315 in, Dimensional Standards DIN 916, Head Height Not Applicable, Maximum Head Height Not Applicable, Minimum Head Height Not Applicable, Package Quantity 100