Screw Bolt Product Description Cone point set screws headless external threaded fasteners with internal hexagonal drivers. Used to fix one object to another object. When fully installed, the hexagon socket set screw is flush with the surface of the material. Product Details Drive StyleHex Head typeHeadless ThreadingFully threaded System of MeasurementMetric Thread DirectionRight Hand HardnessRockwell B80 Thread SpacingCoarse Grade/ClassA4-70 MaterialStainless steel 316 Tip typeCone point StandardDIN914,ISO4027 Product equipment Feature These Cone point set screws are made of 316 stainless steel, which has excellent chemical resistance and can be used in salt water environments. The tip is wedged into the contact surface to firmly fix soft materials such as brass. The listed length is the total length. Test equipment Advantage Cone point set screws have a sharp tapered tip, wedged into the contact material, so it can provide the strongest torsion and axial retention of all set screw types, and the sharp tapered tip penetrates the surface to achieve permanent fixation. Excellent retention. Certificate Our factory Warehouse-MapScrew Bolt website:http://www.jgscrewnut.com/screw-bolt/