Easy to use, can be applied using 5/16 socket for 12 gauge or 3/8 sockets for 14 gauge or appropriate driver bit in a power tool. Self drilling type 17 point can pierce light gauge steel up to 0.6mm. Hex flanged heads provide optimum holding power where appearance is secondary. Mechanical galvanising provides corrosion resistance for external applications. APPLICATION: For structural framing, furniture, gates, fences, work benches, pergolas, carports END USER: Builders, Framers, Carpenters, Furniture Makers and DIYers FEATURES: Cold forged and roll formed, hex flanged head, coarse thread with type 17 point, made from hardened wire and mechanically galvanised class 3 finish