What is the tolerance range of precision screws?
What is the tolerance range of precision screws?
However, Yueluo still feels that there should be room for improvement for the screw improvement and screw that integrates stability, labor, fast and multi-function in the above two cases; for example, No. 556784 screw improvement Although the rod has the function of cutting and collecting chips, when the screw starts to screw into the object such as wood, it is hindered by the hardness of the object's tissue, so the staff still needs to exert considerable force, resulting in the lock. In the solid operation, there is still a lack of difficulty in screw-in operation; another example, new cases such as No. 289417 screw that integrates locking, stability, labor-saving, fast and multi-function, although the rod has the structural function of cutting and chip removal, it is The rod part is screwed into the middle section to the rear section of the object. Since the debris cannot be discharged, the rod part pushes the outer part of the object to the surrounding tissue of the object, so that the object expands outwards and even seriously damages the appearance of the object.
A rivet is a nail-shaped object used to connect two parts (or members) with a through hole and a cap on one end. In riveting, the riveted parts are connected by their own deformation or interference. There are many types of rivets, and they are informal.
Head type broadcast 1. Hexagon head (hexagon head) 2. Hexagon head with flange (hexagon head with flange) 3. Square head (square head) 4. T head T head (hammer head) 5. Mushroom head (truss head) 6. Cheese head 7. Round head 8. Pan head 9. Countersunk head (flat head) 10. Raised countersunk head (oval
Guangdong Yueluo Hardware Industry Co., Ltd. discloses a countersunk head rivet. The countersunk head rivet includes a nail body and a mandrel. The nail body is tubular, and one end is provided with a nail cap. The mandrel passes through the nail body from the cap end and forms a diameter. For the nail head larger than the internal diameter of the nail, the nail cap is close to the end of the nail head to form a countersunk head. When the countersunk head rivet is in use, the nail body forms a countersunk head structure to the riveted metal piece under the extrusion of the nail head, so that the two riveted metal pieces are firmly riveted without the nail body protruding from the metal piece.
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