Flange surface outer hexagonal bolt recess anti slip hexagonal screw thread gasket machine din6921

A rivet is a nail shaped object used to connect two parts with a through hole and a cap at one end. It mainly uses its own deformation or interference to connect the riveted parts during riveting.

Yueluo Yueluo provides a rust resistant screw to solve the problem of existing screws that cannot be disassembled once they rust, resulting in a serious waste of resources. The method adopted by Yue Luo is to cut the original nut into two halves, surrounded by a polygonal ring block around the periphery, so that the three parts form the shape of a nut as a whole. However, no other techniques are used to bond between the three parts. This not only fixes the nut that has already been divided into two halves, but also allows the wrench to find the point of force. There should be no relative movement between the screw block and the outer ring, except in the direction indicated by the screw shaft, so the three and the screw shaft can remain fixed for a long time. When the screw has rusted to the point where it cannot be opened with a wrench, a hammer or other object can be used to strike the nut horizontally, allowing the outer ring and two halves of the nut to naturally separate. This method not only solves the drawback of not being afraid of embroidery on screws, but also greatly improves the installation efficiency of nuts. When tightening the nuts, it is necessary to place the nuts on the outer end of the screw shaft and then use a wrench to continuously rotate until they reach the top point. For the screws provided by Yueluo, the two halves of the screws can be directly placed near the top point during installation, and then inserted into the outer ring from the outer edge, *Tighten directly afterwards. After adopting the structure of Yueluo, even if the screws rust due to long-term adverse weather conditions, there is no need to cut off the entire screw, or even use other profit-making methods to destroy the screws. Simply knock off the outer shell of this screw, greatly facilitating installation.

A flat gasket with at least one extended bearing layer. This type of flat gasket is used as a conveyor plate or also as a cylinder head gasket. They are also used in the field of exhaust pipelines for internal combustion engines.

Positioning pins are widely used in mechanical equipment and automated assembly lines, with a wide variety of types, including fixed positioning pins, interchangeable positioning pins, conical positioning pins, edge cutting positioning pins, standard diamond positioning pins, spring positioning pins, etc. Their function is to limit the free movement of parts and items. Users often choose different positioning pins based on the actual condition of the parts, such as selecting positioning pins with different shapes and performance according to the usage situation, requirements, and performance. At present, users usually use a combination of cylindrical pins and edge cutting positioning pins as positioning methods for automatic line accompanying fixtures and automatic grasping grippers.

Riveting nuts can be divided into fast cutting steel riveting nut S-type, stainless steel riveting nut CLS type, stainless steel riveting nut SP type, and copper and aluminum riveting nut CLA type in terms of material, which should be used in different environments. The specifications usually range from M2 to M12. There is no unified national standard for rivet nuts, which are commonly used in the chassis, cabinet, and sheet metal industry. S series, CLS series, and SP series rivet nuts use internal threads as a simple method of installing in precision sheet metal products. Small and precise nuts that play a reliable fixing role are used to complete the processing of the side plate of the sheet metal. During installation, the nuts are inserted into the holes of the metal plate to complete the embedding strengthening function under pressure. Application advantage 1: the back of the board remains completely flat; 2. Small size and precision, suitable for all electronic or precision equipment; 3. High torque resistance; 4. Easy equipment and simple riveting; 8. Standardized serialization can meet various design requirements.