Shenzhen Shi Shi Tong Metal Products Co., Ltd

What are the advantages of  combination screw  and general screws? Combination screws are used in combination with other components, such as elastic washers, flat washers, flower teeth, etc. Other screws are generally loaded before rolling, but the washers cannot be removed after rolling. The raw materials of the combination screw are usually iron and stainless steel, and the strength is matched with the corresponding gasket, which can make the production line easy and quick to operate and improve work efficiency, so it is widely used in electrical, mechanical, furniture, ship and other fields. Choose the right  combination screw , please pay attention to the following four requirements: First, it depends on the requirements of the raw materials of the screw, that is, the combination of the required information, such as stainless steel or iron. Second, it depends on the national standard number of the combination screw, there are several specifications such as ...

We sometimes use combination screws in our lives, but do you know about the combination screws? What is a   combination screw ? A  combination screw  is a combination of a screw with a spring pad that is fastened together with a flat pad through the fangs. The second combination screw means that one screw is only equipped with one spring pad or only one flat pad, and it is also possible to have only one tooth assembly. The combination screw country number is indicated by GB9074. Commonly used cross-slot small head three  combination screw  country code is GB9074.8. In China, it is represented by a letter as PM. Professional combination screw manufacturers, the habitual representation is three-in-one PM. The commonly used cross recessed large pan head combination screw is GB9074.4. The professional is called the combination screw of the large pan head. Or R head, or B head. That is to say, the head of the combination screw is larger than the head of the sm...