M5X12 Bright Zinc Plated BZP Roofing Bolts with a Philips Head are manufactured from a durable hardened steel and feature a flat seating surface under the bolts head. This makes them ideal for fixing, joining or fastening thin section materials such as roofing, guttering, cable tray, trunking and a limitless number of other applications. These zinc plated roofing bolts with nuts are resistant to corrosion, making them ideal for both indoor and outdoor use. With a low profile cross-slotted mushroom heads, along with metric M5 threading these are compatible with a range of other M5 threaded products. Main Features: Roofing bolt with included nut Zinc plated for corrosion resistance Hardened steel construction M5 Threading Cross-slotted mushroom head Ideal for roofing & guttering Technical Specification: Product material: Hardened Steel Coating: Zinc Threading: M5 Length: 12mm Conforms to: BS4933 You may also be interested in a C.K Tools Insulated Philips Head S