3/8 inch 3/8 for 3/8 screw hole equipment on the market, 3/8 inch thread diameter of 9.2 mm, iron-nickel coating and iron materials, screws have a word and C ring two styles, there is a groove on the screw surface to remove the screw by hand. The camera screw can quickly install the snap plate camera, prevent the snap plate screw from rotating in the process of installation, and can quickly install the camera.