Electronic product screw step Self-tapping screw M5 M6 M8 M10

"Quality Inspection Process Editing Broadcast
From the beginning, when ordering cross recessed screw wire materials into our screw production industry, manufacturers must first test the wire diameter of the screw wire and the material of the screw. Generally, the wire diameter of the screw is measured using a caliper to determine whether it matches the size ordered by ourselves. After testing these, it is the inspection process during the production process, starting from the screw head, to determine the head size, head edge to head, diagonal, cross groove depth, screw tolerance range, and so on. These are all tested using calipers. During the process of tooth rubbing, various aspects of inspection are mainly focused on whether the tooth thread can pass through the go/no go gauge, whether the screw thread can pass through the go/no go gauge, and whether it can stop with the go/no go gauge. Next is the issue of electroplating measurement. After electroplating, does it meet environmental requirements and can it pass the time required by salt spray. Tools include environmental testing machines and salt spray testing machines.
In short, in the production and sales process of cross recessed screw screws, it is necessary to use necessary tools to check the quality of the screws. The summary should be summarized as follows: calipers, hardness testers, salt spray machines, environmental testing machines, go/no go gauges, and so on"

Many customers ask what is the difference between Rivet nut and press rivet nuts, and how to use them? Now let's learn the difference between the pull-down rivet nut and the press rivet nut with Guangdong Screw. Firstly, in terms of appearance, you can take a look at the different effects on the appearance. In terms of appearance, Rivet nut are quite different from press rivet nuts, but their main functions are almost the same. They all provide threads for thin plates, but the installation methods vary. The installation method greatly determines the purpose and usage of a nut. First of all, the installation method of Rivet nut is to use rivet pulling equipment to pull rivet, so it is suitable for operation in places where it is difficult to press rivet for square tube and round tube. Rivet nut also makes up for some shortcomings of electric welding, such as aesthetics, and places where welding is not easy, such as thin plates.

Flat washers are frequently used in mechanical connections and are usually placed between nuts or screw heads and the connected parts to prevent screws or nuts from loosening during use. The upper and lower end faces of conventional flat gaskets are mostly smooth planes with a single structure and poor compressive strength. When assembling with nuts or screws, the pressure on the flat gasket increases, and it is prone to fracture when tightly fitting and rubbing with the nuts or screws, greatly affecting the quality of the product.