General description The TIMco Wing Tip heavy section screw is engineered for securely attaching wood to metal, specifically designed for heavy section steel up to a maximum thickness of 12mm. Its innovative wing design allows for efficient reaming of timber, enabling the screw to achieve maximum revolutions per minute (R.P.M.) without overheating. Technical specifications Size: 5.5 x 65mm Box Quantity: 200 Colour/Plating: Bright zinc electrolytic plating with a clear toxin-free finish Head Type: Phillips Countersunk Bit Size: PH3 Other information The fine self-tapping thread ensures effective penetration into both wood and metal. When the wings contact metal, they break off to allow the thread to self-tap into the metal.