Tapping Sheet Metal Screw, Head Type Oval, Finish Plain, Material 18-8 Stainless Steel, Screw Size #4, Fastener Length 1/2 in, Head Width 0.212 in, Head Height 0.104 in, Drive Size #1, Dimensional Standards ASME B18.6.4, SAE J933, Pack Size Small, System of Measurement Inch, Drive Phillips, Package Quantity 100