Nuts are nuts, screwed together with bolts or screws used to fasten the role of the parts, all manufacturing machinery must use an original. Nuts a wide range, we have a common GB, British standard, American Standard, Japan The nuts are divided into carbon steel, high strength, stainless steel, steel and other types according to the material, according to the product attributes corresponding to different national standard number is divided into ordinary, non-standard, (old) GB, the new national standard, , British, German standard. (Such as M8, M16), the United States, the British system with the score or # that specifications (such as 8 #, 10 #, 1/4, 3), the size of the different, different threads are divided into different specifications. / 8) Fasteners, nuts are parts that are tightly connected to the machine and can be connected together by means of internal threads, equivalent nuts and screws. For example, the M4-0.7 nut can only be used with the M4-0.7 screw ( In the nut, M4 refers to the nut diameter of about 4mm, 0.7 refers to the distance between the two threads of 0.7mm); US-made products are also the same, such as 1 / 4-20 nut only with 1 / 4-20 screw With (1/4 finger nut diameter of about 0.25 inches, 20 fingers per inch, there are 20 teeth).
Hexagon nut (Hexagon nut) with bolts, screws used in conjunction with the role of fastening machine. Which by the first type of hexagonal nuts the most widely used, C-class nuts for rough surface, the accuracy of the requirements of the machine is not high, equipment or structure; A and B-class nuts for the surface is relatively smooth, high precision requirements Machine, equipment or structure. Type 2 hexagon nut thickness m thick, mostly used often often need to dismantling the occasion. The thickness m of the hexagonal thin nut is thin and is used for the case where the surface space of the connected part is restricted
Which by the first type of six nuts with the most widely used, C-class nuts for rough surface, the accuracy of the requirements of the machine is not high, equipment or structure; A and B-class nuts for the surface is relatively smooth, high accuracy requirements Of the machine, equipment or structure. Type 2 hexagon nut thickness M thick, mostly used often often need to wear and tear of the occasion. The thickness M of the hexagonal thin nut is thin and is used for the case where the surface space of the connected part is restricted.