Hex nut basics

Update:30 Aug 2019
Summary:

The nut is a nut, a part that is screwed together with […]

The nut is a nut, a part that is screwed together with a bolt or a screw for fastening, and all the original parts that must be used in the manufacturing machinery. There are many kinds of nuts. We often have the national standard, the British standard, the American standard, and the Japanese. According to the different materials, the nut is divided into carbon steel, high strength, stainless steel, plastic steel and other major types. According to the product attributes corresponding to different national standard numbers are divided into ordinary, non-standard, (old) national standard, new national standard, American system , English, German standard.
Different sizes, the thread is not divided into different specifications. Generally, the national standard and German standard are indicated by M (for example, M8 and M16), and the US and English systems use fractions or # to indicate specifications (such as 8#, 10#, 1/4, 3). /8) Fasteners, nuts are the parts that tightly connect the mechanical equipment. They can be connected together by the inner thread, the same size nut and screw. For example, the M4-0.7 nut can only be matched with the M4-0.7 screw. In the nut, M4 refers to the inner diameter of the nut is about 4mm, 0.7 means the distance between the two threads is 0.7mm); the American products are also the same, for example, the 1/4-20 nut can only be matched with the 1/4-20 screw. (The 1/4 finger nut has an inner diameter of approximately 0.25 inches, and 20 fingers have 20 teeth per inch).