TIMco 40020CLASS Classic Multi Purpose Screw PZ2 CSK A2 S/S 4.0x 20mm Box of 200 Classic Screws - Stainless Steel The exceptional reliability and superior performance of the Classic Multi-Purpose Screw manufactured from A2 Stainless Steel. Ideal where ultimate corrosion resistance is required 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. NOTE: Sharp point only. CE Standard WebBS EN 14592:2008 Corrosion Rating4 - Urban & industrial areas with a moderate salt atmosphere Driver Bit SizePZ2 Gauge8 Head Dia. mm7.87 Head TypeDouble Countersunk Inner Thread Dia. mm2.50 Length inchLength mm20 MaterialAustenitic Stainless Steel (A2-304) Pack Dimensions L x W x H mm70 x 58 x 34 Pack Weight kg0.240 Point Type25° Sharp Product Code40020CLASS Recess TypePozi Size imp.8 x Size mm4.0 x 20 SubstratesHardwood, Softwood, Chipboard, MDF, Plastic, Thin Sheet Metal, Corrosive Wood (e.g. Oak, Cedar) Thread Dia. mm4.0 Thread Length mm15 Thread TypeSingle Coarse 40°.