The rivet nut column has a hexagonal shape at one end and a cylindrical shape at the other end. There is a retreat groove between the hexagonal edge and the cylindrical shape, and its internal shape is an internal thread. The hexagonal head is pressed into the preset hole of the thin plate by a press machine (the diameter of the preset hole is generally slightly larger than the outer diameter of the rivet nut column), causing plastic deformation around the hole. The deformed part is squeezed into the retreat groove of the rivet nut column, making the rivet nut column rivet tightly to the thin plate, thereby forming an effective fixed internal thread on the thin plate.
The rivet nut column is divided into four types based on material and internal thread form: quick cut steel through-hole rivet nut column SO type, stainless steel through-hole rivet nut column SOS type, quick cut steel blind hole rivet nut column BSO type, and stainless steel blind hole rivet nut column BSOS type, which are respectively used in different environments.
There is no specific national standard for rivet nut columns. Early manufacturers came from the United States and gradually formed today's industry standards after being introduced into China.
Advantages of waterproof rivet nut column:
SOS self riveting through-hole nut post is widely used in the inlay process of wall panels for products such as metal sheets, control boxes, and power cabinets. The special nature of its structure, during assembly, only requires inserting the nut post into the hole of the metal plate for "riveting" operation, which has the following advantages:
1. The length guarantee of the distance range has been achieved, greatly simplifying the assembly process and accelerating the production progress of prefabricated spacing panels and accessories;
2. The back of the board remains completely flush, while ensuring that the nut column head is smooth with the plane of the board;
3. The raw materials are made of easy cutting iron or easy cutting stainless steel;
Technical Guidelines for Application of Waterproof Rivet Nut Columns:
1. When selecting nut posts, it is necessary to determine the size range based on the thickness of the plate used. The hardness of low-carbon steel plate must be less than 70RB, and the hardness of stainless steel plate must be less than 80RB.
2. The surface of the easy to cut iron is treated, and the stainless steel maintains its original color. Users can order according to the model specifications in the table or customize according to their needs.
3. The hole size of the board must be processed according to the tolerance size of 0-+0.075mm, and it is recommended to punch.
4. Installation must be achieved through "riveting" operation, and must not be impacted or knocked in.
5. When selecting stainless steel as the material, the tail number should be indicated with "S".
6. The end face of the nut column with straight teeth is represented by "C".
7. The length of the through-hole nut column below 10mm is full thread, and above 10mm, it can be enlarged with a hexagonal end face square (Type I) or circular end face (Type II)