Standard: DIN912; Thread Size: M4-0.7; Thread Pitch: 0.7mm Hex Drive Size: 3mm; Package: 100 Pcs Head Diameter: 6.78mm (min)-7.22mm (max); Head Height: 4mm; Thread Length: 10mm Used widely in the home, office and factory appliance, communication equipments, ship assembly and other machinery industry. Material: 304 Stainless Steel 18-8 that you will probably see in your pans and cookery tools. It's used for a wide variety of home and commercial applications. Because of its slightly higher strength and wear resistance than type 316, it's also used for nuts, bolts, screws and other fasteners.