What is the tolerance range of precision screws?
What is the tolerance range of precision screws?
There are generally two, one is iron, that is, carbon steel. One is stainless steel, and of course there are copper and aluminum nuts, but these are rarely used. Copper is more or less useful, and nuts like aluminum are rarely used.
In order to achieve this technical purpose, the plan of Guangdong Yueluo Hardware Industry Co., Ltd. is: a new type of open rivet, including a rivet body and a mandrel, the rivet body and one end of the mandrel are fixedly connected, and the lower end of the rivet body is provided with There is a round table, the top of the mandrel is provided with a nail head pit, the mandrel is provided with a stop groove, the lower side of the stop groove is provided with a mandrel breakpoint, and the mandrel is set on the mandrel. There is a stop ring, the stop ring is located on the lower side of the round table, and the lower side of the stop ring is provided with an assembly warp.
In addition, the angle aluminum connection structure itself has structural defects of poor torsional and shear resistance, and many projects use larger insulating glass to meet the requirements of architects, resulting in a larger self-weight. In the event of a natural disaster such as an earthquake that will cause the curtain wall to shake violently, the bolts on the angle aluminum are prone to breakage, and the seismic performance is not good. Especially for the beam with the open structure, since the angle aluminum is installed in the opening cavity of the beam, the inertia moment of the beam is small, and the torsion resistance and shear resistance performance of the force are worse.
In view of the deficiencies of the prior art, a simple structure is provided, which can ensure that the nut body and the washer are assembled together during the production of the wheel nut, and will not be separated from each other in any occasion, so as to ensure the reliability of the assembly, and the nut will no longer appear. The wheel nut assembly that needs to be reassembled after use or placement saves time and effectively improves the convenience of the wheel nut when it is used or placed
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