Socket Set Screw, Head Type Headless, Point Type Flat, System of Measurement Inch, Thread Size 1/2 In. -13, Overall Length 2 1/2 in, Drive Type Socket, Drive Size 1/4 in, Material Alloy Steel, Finish Black Oxide, Pack Size Small Pack, Decimal Equivalent 0.25 in, Dimensional Standards ASME B 18.3, Head Height Not Applicable, Maximum Head Height Not Applicable, Maximum Temperature 302 Degrees F, Minimum Head Height Not Applicable, Minimum Temperature -58 Degrees F, Package Quantity 10. This item has been restricted from sale in the following state (s): []