All the features and superior performance of the Classic Multi-Purpose Screw with a corrosion resistant coating to withstand over 1,000 hours salt spray. Designed to be used with black ironmongery. CE Standard WebBS EN 14592:2008 Corrosion Rating 3 - Urban & industrial areas with a low salt atmosphere. Driver Bit Size PZ2, Finish Exterior (Black Organic), Gauge 8, Head Dia. mm 7.87, Head Type Double Countersunk, Inner Thread Dia. mm 2.50, Length inch 1, Length mm 25, Material Carbon Steel, Pack Dimensions L x W x H mm 85 x 55 x 45, Pack Weight kg 0.300, Point Type 25° Sharp with Single Slash, Product Code 40025CLAB, Recess Type Pozi, Size imp. 8 x 1, Size mm 4.0 x 25, Substrates Hardwood, Softwood, Chipboard, MDF, Plastic, Thin Sheet Metal, Thread Dia. mm 4.0, Thread Length mm 20, Thread Type Single Coarse 40°. The exceptional reliability and strength of the TIMco Classic Screw PZ2 CSK BLACK 4.0 x 25mm Box of 200 Classic Screws - Black.