Machine Screw, Head Type Flat, Material Stainless Steel, Finish NL-19, Drive Phillips, Thread Size 1/4 In. -20, Fastener Length 1 in, Head Width 0.477 in, Head Height 0.153 in, Drive Size #3, Tensile Strength Not Applicable, Dimensional Standards ASME B 18.6. 3, Pack Size Small, Minimum Thread Length Not Applicable, Type Machine Screw, Washer Outside Diameter Not Applicable, Washer Thickness Not Applicable, Maximum Head Width 31/64 in, Minimum Head Width Not Applicable, Maximum Head Height 5/32 in. This item has been restricted from sale in the following state (s): []