ZENITH® Class 3 Galvanised Bugle Batten Screws with a self-drilling tip are suitable for use in heavy duty applications. They features a Bugle Head to produce a flush surface finish. The special end slot forms a thread cutting action into the timber, which reduced timber expansion and minimises the splitting of timber. The Class 3 Galvanised finish provides a high corrosion protection. Suitable for use on hardwood and softwood timbers. Ideal for use in heavy duty landscaping applications such as deck joists, structural framing, fences, gates and outdoor furniture.