Specifically designed as a multi-purpose product, the 25 sharp point, special thread design, lubrication and corrosion resistant plating ensures the screw will consistently perform efficiently in hardwood, chipboard, MDF, plastic and thin sheet metal, whilst offering exceptional holding power. NOTE: Sharp point only. Pan head for improved clampingFully threaded up to 75mm, thereafter partially threaded40 deep single thread to provide a secure fixing with high pull-out resistanceSurface hardened up to 750 HV to prevent torque shearing under load and a core hardness of up to 450 HV for improved ductility"Thread Dia. mm - 3.5Length mm - 20Thread Length mm - 20Head Type - PanRecess Type - PoziPoint Type - 25 SharpDriver Bit Size - PZ2Finish - Zinc & YellowMaterial - Carbon Steel Timco Classic Multi-Purpose Screws - PZ - Pan Head - Yellow (Size 3.5 x 20 - 200 Pieces) Size: 1000mm x 1000mm