Stainless Steel Rail Fasteners, Customized Rail Spike

The screw thread at the lower part of the screw screw is special M25.6 * 6 -- d24.0/25.6 thread, and the tooth height is 3.25 -- 00.25mm. The screw bolt ends are manufactured in accordance with the provisions of GB2. The upper thread of the screw is not allowed to have any collision or burr that hinders the free rotation of the screw gauge, and it is not allowed to have incomplete double-tooth tip, scratch and thread buckle that affects the use.