Designed as an alternative to the traditional coach screw mainly used for timber to timber applications. Wafer head for improved clamping and a low profile finish. Coated with a patented multi-layer corrosion resistant plating to withstand 1,000 hours salt spray test, this screw is ideal for external applications. Application Framing, Landscaping, Decking, Fencing, Stairs, Roofing, Gazebos, Pergolas, Sleepers CE Standard Web BS EN 14592:2008 Colour Olive Green Corrosion Rating 3 - Urban & industrial areas with a low salt atmosphere Description Designed as an alternative to the traditional coach screw mainly used for timber to timber applications. Wafer head for improved clamping and a low profile finish. Coated with a patented multi-layer corrosion resistant plating to withstand 1,000 hours salt spray test, this screw is ideal for external applications. Driver Bit Size TX40 Driver Bit Type TX Drive Finish Exterior (Green Organic) Fixed Washer Dia. mm 21.00 Head Dia. mm 20.84 Head Type Wafer Included Items TX40 S2 Bit (Qty 1) Inner Thread Dia. mm 5.60 Length mm 275 Lubrication Wax Material Carbon Steel Pack Dimensions L x W x H mm 320 x 96 x 62 Pack Weight kg 1.640 Point Type 25° Sharp with Single Slash Product Code 275INW Recess Type TX Drive Shank Type Helix Size mm 8.0 x 275 Substrates Hardwood, Softwood Thread Dia. mm 8.0 Thread Length mm 70 Thread Type 50° Single Deep