All the features and superior performance of the Classic Multi-Purpose Screw manufactured from marine grade A4 Stainless Steel. Ideal for coastal and highly corrosive environments when fixing to softwoods, hardwood (pre-drilled), chipboard, MDF and plastic. Stainless steel must be used where there is corrosive environment and/or the base material has inherent corrosive characteristics e.g. Green Oak. CE Standard Web BS EN 14592:2008 Corrosion Rating 5 - Industrial & coastal areas with an aggressive salt atmosphere Description All the features and superior performance of the Classic Multi-Purpose Screw manufactured from marine grade A4 Stainless Steel. Ideal for coastal and highly corrosive environments when fixing to softwoods, hardwood (pre-drilled), chipboard, MDF and plastic. Stainless steel must be used where there is corrosive environment and/or the base material has inherent corrosive characteristics e.g. Green Oak. Driver Bit Size PZ1 Gauge 6 Head Dia. mm 6.68 Head Type Double Countersunk Inner Thread Dia. mm 2.25 Length inch Length mm 20 Material A4 Stainless Steel Pack Dimensions L x W x H mm 70 x 34 x 58 Pack Weight kg 0.184 Point Type 25° Sharp Product Code 35020CLA4 Recess Type Pozi Size imp. 6 x Size mm 3.5 x 20 Substrates Hardwood, Softwood, Chipboard, MDF, Plastic, Thin Sheet Metal, Corrosive Wood (e.g. Oak, Cedar) Thread Dia. mm 3.5 Thread Length mm 15 Thread Type Single Coarse 40°