Goldscrew Yellow zinc-plated Carbon steel Wood Screw (Dia)4mm (L)45mm, Pack of 200. Top quality, waxed single thread, multipurpose screw which is popular with the professional due to a lower screw-in torque and faster drive speed. Suitable for screwdrivers, combi drills and impact drivers.. This pack of Prodrive drive recess countersunk flat head wood screws are constructed from a durable metal, 45mm in length and come partially threaded on longer screws. They have a thin shank with double helix angled thread and come wax coated for lubrication. They\'re ideal for a range of DIY applications. Woodscrews by Goldscrew.