General description All the features and superior performance of the Classic Multi-Purpose Screw manufactured from A2 Stainless Steel. Ideal for applications requiring ultimate corrosion resistance when fixing to softwoods, hardwood (pre-drilled), chipboard, MDF, and plastic. Stainless steel is essential in corrosive environments or when the base material has inherent corrosive characteristics, such as Green Oak. Technical specifications Size (mm): 4.0 x 30 Size (imp.): 8 x 1.1/4 Driver Bit Size: PZ2 Pack Type: Box Pack Quantity: 200 Recess Type: Pozi Head Type: Pan Thread Type: Single Coarse Point Type: 25° Sharp Material: Austenitic Stainless Steel (A2-304) Corrosion Rating (1-5): 4 - Suitable for urban & industrial areas with a moderate salt atmosphere Substrates: Hardwood, Softwood, Chipboard, MDF, Plastic, Thin Sheet Metal, Corrosive Wood (e.g. Oak, Cedar) Salt Spray Resistance (Hrs): Tested to BS EN 9227 - 1008 Usage Ideal for fixing in environments where corrosion resistance is