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What is Bolt ? What is Nut?
Bolts: mechanical parts, cylindrical threaded fasteners with nuts. A type of fastener consisting of a head and a screw (cylinder with an external thread), which needs to be matched with a nut to fasten and connect two parts with through holes.
Nut is a cap, a part that is screwed together with a bolt or screw for fastening. A component that must be used in all production machinery is divided into carbon steel, stainless steel, non-ferrous metals (such as copper), etc. Several types.
Classifications of Bolts and Nuts
Bolts are divided into eight grades: 3.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 according to their performance grades. Among them, bolts of grade 8.8 and above (including grade 8.8) are made of low carbon alloy steel or medium carbon steel and are heat treated (quenched). + Tempering), generally referred to as high-strength bolts, generally referred to as ordinary bolts below 8.8 (not including 8.8).
Nuts are parts that tightly connect mechanical equipment. Through the inner thread, nuts and bolts of the same specification can be connected together. It has Self-locking nut, lock nut, lock nut, four-claw nut, screw-in nut, safety nut, thin rod screw connection nut, self-locking hexagonal cap nut, special anchor nut, hexagonal crown thin nut, ring nut .
Applications of Bolts and Nuts
The application range of bolts includes: electronic products, mechanical products, digital products, electrical equipment, electromechanical mechanical products. Bolts are also useful in ships, vehicles, water conservancy projects, and even chemical experiments. As for engineering, construction, and bridges, large bolts and nuts are used; transportation equipment, airplanes, trams, automobiles, etc. are used together. Bolts have important tasks in industry. As long as industry exists on the earth, the function of bolts will always be important.