TIMCO Classic Multi-Purpose Screws - PZ - Double Countersunk - A4 Stainless Steel (Size 3.5 x 20 - 200 Pieces)

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. Double countersunk reduces the likelihood of head shear and assists completion of countersinking 40 deep single thread to provide a secure fixing with high pull-out resistance Single slash on 25mm+ to reduce torque and the likelihood of the timber splitting when the screw is inserted close to the edge All sizes up to and including 75mm are fully threaded and lengths 80mm and above all have 70mm thread length" Thread Dia. mm: 3.5 Length mm: 20 Thread Length mm: 15 Head Type: Double Countersunk Recess Type: Pozi Point Type: 25 Sharp Driver Bit Size: PZ1 Material: A4 Stainless SteelSize 3.5 x 20 - 200 Pieces