TurboGold Yellow zinc-plated Carbon steel Wood Screw (Dia)3.5mm (L)40mm, Pack of 200. This quality single thread multipurpose screw is durable and shaped to drive fast. It is suitable for screwdrivers, combi drills and impact drivers.. This pack of Prodrive drive recess double countersunk head wood screws are constructed from a durable double hardened core, are 40mm in length and come partially threaded. They have a rifled shank with a deep thread making them ideal for a range of DIY applications. Woodscrews by TurboGold.