Zinc Plated Carbon Steel Hexalobular Button Head Bolt

Button head bolts are manufactured from carbon steel, alloy steel, or stainless steel, delivering reliable strength for various industrial applications. The alloy steel variants, such as chromium molybdenum steel, offer enhanced tensile strength up to property class 10.9. Dimensions are fully customizable, including thread diameter, thread pitch, and overall length. Available surface treatments include black oxide, zinc plating, nickel plating, trivalent chromate, and Dacro finish, all of which enhance corrosion resistance and service life.

Several international standards govern button head bolt specifications. The primary standard is ISO 7380-1 for hexagon socket button head screws, covering M3 to M16 metric coarse threads with product grade A. Additional standards include ISO 7380-2 for button head screws with collar, ISO 7380-3 for hexalobular socket types, and DIN EN ISO 7380-1. These bolts can be produced according to DIN, GB, ISO, and ANSI standards with OEM and ODM support. Common applications include automotive interior panels, machinery guards, electronics enclosures, furniture assembly, and precision equipment.