High quality stainless steel 304/316 hexagonal bolt M5 M6 with white zinc plated outer hexagon bolt

At present, screws commonly used in orthopedics to fix steel plates are mostly hexagonal in shape. In clinical practice, it has been found that these hexagonal screws are very easy to slip, especially during the removal process, which not only prolongs the time, increases the pain of patients, but also increases the workload of medical staff. When installing ventilation ducts, due to the deep and narrow gaps between the air ducts and the wall, and between the air ducts and the air ducts, the arm cannot enter them for operation, which brings great difficulties to the installation of screws and nuts located in these positions. Generally, the following three methods are used: first, directly breaking the wall for installation, but this method causes significant damage to the building and cannot be used for the installation of screws and nuts in the gaps between the air ducts; The second is to set up an inner flange inside the air duct and connect it with bolts, which will reduce the effective cross-sectional area of the air duct and increase the resistance during gas flow. Moreover, during installation, it is necessary for people to enter the air duct for construction. Considering that the size of the air duct varies, the position is high, and there are no load-bearing support components, there are certain safety hazards; The third is to directly ignore and not do it, but it can easily lead to loose air duct connections and large air volume loss. The above methods all have significant construction defects, which not only waste a large amount of manpower and time during the construction process, but also have the problem of low air supply efficiency. During assembly, the washer and screw are two separate parts, and the washer needs to be placed on the connecting part of the screw. In this way, the workload during assembly increases and the gasket is prone to sliding. Some screws are fixed with washers, which can reduce the workload during assembly, but the washers are fixed by the screws, which limits their original function. In response to the above situation, Guangdong Yueluo Hardware Industry Co., Ltd. aims to solve the technical problem of providing a self expanding semi solid installation rivet, with the aim of solving the problem that when people manually operate the rivet itself, the grip and bonding force on the installation surface are weaker than those of rivets installed by mechanical rotation when connecting plastic shells, lightweight boards, insulation materials, circuit boards, or any other lightweight and lightweight materials, The bonding strength of rivets used for manual operation needs to be enhanced, and the rivet structure needs to be improved and reinforced when installing lightweight materials. When we select the product or when the customer comes back from purchasing it for production installation. Installation must be achieved through "riveting" operations, and brute force twisting is not allowed to enter. Slowly twist in along the thread of the tooth. So it is important to press the rivet nut through the go/no go gauge. If stainless steel is used as the material, the tail number should be indicated with "S". The end face of the nut column with straight teeth is represented by "C". The through-hole nut column with a length of 10mm or less is full thread, and can be expanded in hexagonal square (Type I) or circular end face (Type II) when it is 11mm or more.