A single thread woodscrew with a black corrosion resistant coating designed to withstand over 500 hours salt spray. Ideal for use with black and black antique ironmongery. CE Standard Web BS EN 14592:2008 Corrosion Rating 3 - Urban & industrial areas with a low salt atmosphere Description A single thread woodscrew with a black corrosion resistant coating designed to withstand over 500 hours salt spray. Ideal for use with black and black antique ironmongery. Driver Bit Size PZ2 Finish Black Organic Gauge 8 Head Dia. mm 7.62 Head Type Double Countersunk Inner Thread Dia. mm 2.50 Length inch 1 Length mm 30 Material Carbon Steel Pack Dimensions L x W x H mm 110 x 96 x 18 Pack Weight kg 0.04 Point Type 25° Sharp Product Code 40030CHBP Recess Type Pozi Size imp. 8 x 1 Size mm 4.0 x 30 Substrates Timber, Masonry (with plug) Thread Dia. mm 4.0 Thread Length mm 25 Thread Type 40° Single Deep