General description Timco 4.0 x 30mm Classic Stainless Steel Countersunk Wood Screws are designed for superior performance and durability. Manufactured from A2 Stainless Steel, these screws are ideal for applications requiring ultimate corrosion resistance, particularly when fixing to softwoods, hardwoods (pre-drilled), chipboard, MDF, and plastic. They are especially recommended for use in corrosive environments or with materials that have inherent corrosive characteristics, such as Green Oak. Technical specifications Size: 4.0 x 30 mm Imperial Size: 8 x 1 1/4 inches Driver Bit Size: PZ2 Pack Type: Box Pack Quantity: 200 Recess Type: Pozi Head Type: Double Countersunk Thread Type: Single Coarse Point Type: 25° Sharp Material: Austenitic Stainless Steel (A2-304) Corrosion Rating: 4 (suitable for urban & industrial areas with a moderate salt atmosphere) Salt Spray Resistance: Tested to BS EN 9227 - 1008 hours Substrates: Hardwood, Softwood, Chipboard, MDF, Plastic, Thin Sheet Metal,