Forgefix Spectre™ Advance Multi-purpose Wood Screws feature a countersunk, Pozidrive compatible, recessed head. Fully threaded, up to 50mm, with a sawtooth thread, to prevent splitting and reamer to prevent jacking (50mm and above). They are also surface hardened with a quick start type 17 slash point. The screws have a black coated finish for excellent resistance to corrosion. Spectre™ by Forgefix incorporates a long list of advanced screw features, often only found in premium screws, into what we've named advanced multi-purpose wood screws.CE approved for use in load-bearing timber construction.Select Option 3.5 x 16mm, Box 2003.5 x 25mm, Box 2004.0 x 25mm, Box 2004.0 x 30mm, Box 2004.0 x 40mm Box 2005.0 x 30mm Box 2005.0 x 40mm, Box 2005.0 x 50mm Box 200 Add to Basket Quantity