How to judge the quality of copper nickel-plated nuts?
1. A nut is a nut, a part that is screwed together with a bolt or screw for fastening. It is an original part that all production machinery must use. There are many types of nuts. Our common ones are national standard, British standard, and American standard. , Japanese standard nuts. Nuts are divided into carbon steel, high-strength, stainless steel, plastic steel, etc. according to different materials. According to the product attributes, the standard numbers corresponding to different countries are divided into ordinary, non-standard, (old) national standard, new national standard, American standard, British standard, and German standard. The size is different, and the thread is divided into different specifications. Generally, the national standard and the German standard are represented by M (such as M8, M16), and the American system and the British system are represented by fractions or (such as 8, 10, 1/4, 3 /8).
2. Nuts are parts that tightly connect mechanical equipment. They can be connected together through the inner thread, nuts and screws of the same specification. For example, M4-0.7 nuts can only be matched with M4-0.7 screw rods (in the nut, M4 Means that the inner diameter of the nut is about 4mm, 0.7 means that the distance between the two threads is 0.7mm); the same is true for American products, for example, a 1/4-20 nut can only be matched with a 1/4-20 screw (1/4 Means that the inner diameter of the nut is approximately 0.25 inches, and 20 means that there are 20 teeth in every inch).
