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What is a nut? Nut is a nut and bolt or screw screw used to fasten together parts, all manufacturing machinery must be an original signature. A wide variety of nuts, our common national standard, British standard, American standard, Japanese standard nut. Nuts according to the different materials into carbon steel, high-strength, stainless steel, plastic, and other major types. According to the different product attributes correspond to the national standard is divided into ordinary, non-standard, (old) new GB, GB, ANSI, BS, DIN. Different sizes, threads are different specifications. M for general national standard, German Standard (such as the M8, M16), ANSI, inch fractions or # specifications (such as 8#, 10#, 1/4, 3/8).
Nut specification generally has a diameter of 4mm, 5mm, 6mm, 8mm, 10MM, 12mm etc, widely used common hex nut, is characterized by fastening strength is large, the disadvantage is that at the time of installation must have sufficient operational space to, when installed, you can use the adjustable wrench or open end wrench, or over glasses wrenches wrench requires a great deal of maneuvering room. Wool nut frictionless surface, structure to prevent Sparks, is rarely used on the machine. Regular hexagon nuts for ordinary screws.