4.0mm x 20mm SCREW-TITE® Pozi Countersunk Woodscrews - Zinc Plated - Box of 200 Screw-Tite all-purpose pozi countersunk woodscrews feature the revolutionary threadform Tri-Lock TS, it uniquely incorporates a single and twin thread on the screw eliminating the need to choose which screw is best for the job. This enables Screw-Tite to perform in a wide range of applications such as Masonry (pilot hole required), Hardwood, Softwood, Sheet Steel, Fibre Board and Plastic. Independent tests have shown without doubt that Screw-Tites insertion speed is twice as fast and in certain circumstances, up to three times faster than other quality screws. Features twin & single thread = two screws in one Balanced Immediate start Close to edge driving Once in, stays in Fast insertion, less strain placed on power tools ensures longer battery life No timber damage on insertion These Pozi countersunk woodscrews are manufactured from steel and coated in a Bright Zinc Plating which provides a level of corrosion and oxidation resistance. For larger quantities or custom lengths, please email and one of our team will provide you with a quotation. 4.0mm x 20mm SCREW-TITE® Pozi Countersunk Woodscrews - Zinc Plated - Box of 200