Screw manufacturers Product Description Phillips Cross countersunk head tapping screws are high-strength and durable fasteners for sheet metal applications. In order to provide a perfect fit, the countersunk variant of the Phillips screw must be used with the counterbore. The use of these screws requires pre-drilling. The screw itself has a gradual thread and can be easily installed on the guide hole. This allows screws to be used for high-precision applications, such as the assembly of machines and electrical components. The basic characteristics of these screws are well-spaced threads and pointed tips, which are called "ring points". Product Details Drive StylePhillips Head typeCountersunk head ThreadingFully threaded System of MeasurementMetric Thread DirectionRight Hand Tip typePointed Thread SpacingCoarse Grade/ClassHardened MaterialStainless steel 304 Surface TreatmentPassivated StandardDIN7982锛孖SO7050 Product equipment Feature Stainless steel screws have good chemical resistance and are ideal for ACQ-treated (arsenic-free) wood. All are tilted under the head for countersinking. They press the thread into the material to ensure a firm fixation. To prevent splitting, drill a pilot hole slightly smaller than the screw. They may be slightly magnetic. The length is measured from the top of the head. Our factory Certificate Warehouse-MapScrew manufacturers website:http://www.jgscrewnut.com/screw-bolt/screw/