5GLZ0 Machine Screw, Head Type Flat, Material 18-8 Stainless Steel, Finish Black Oxide, Drive Phillips, Thread Size #4-40, Fastener Length 21/64 in, Head Width 0.208 in, Head Height 0.049 in, Drive Size #1, Tensile Strength 80,000 psi, Pack Size Small, Type Standard Machine Screw, System of Measurement Inch, Thread Style Fully Threaded, Thread Type Coarse, Package Quantity 50