Bq carbon steel single thread woodscrews pack of 600this pack of pozidriv double countersunk head wood screws are constructed from a durable carbon steel theyre ideal for a range of diy applications comes with 12 different single thread wood screw sizes 50 x 40x40mm 40 x 40x20mm 50 x 40x30mm 20 x 50x70mm 40 x 40x30mm 70 x 35x30mm 80 x 30x25mm 20 x 50x60mm 50 x 35x50mm 80 x 35x20 80 x 30x16mm and 20 x 50x50mm