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Double-end stud refers to threaded fasteners with separate threads. Widely distributed power, chemical, oil refining, valves, railways, axial, steel structures, auto and motorcycle parts, machinery, boiler steel structures, crane towers, large-span steel structures and large buildings.

The thread forming of self-tapping screws has A, AB, B, BP, C and other types. At present, it has gradually been replaced by thread rolling, so it is not recommended to use in new designs.

The head of the self-tapping screw is pointed and threaded. You can use it when you need to drill. It is mainly used for wall panels, furniture, roofs and other places.

Hex Flange Nut is a nut that has a wide flange at one end that acts as an integrated washer. This serves to distribute the pressure of the nut over the part being secured, reducing the chance of damage to the part and making it less likely to loosen as a result of an uneven fastening surface. These nuts are mostly hexagonal in shape and are made up of hardened steel and often coated with zinc.

Hexagonal bolts refer to fasteners composed of heads and screws. Bolts are divided into iron bolts and stainless steel bolts according to their materials, namely, hexagonal head bolts (partially threaded)-Class C and hexagonal head bolts (full threaded)-Class C. A type of fastener consisting of two parts: a screw and a screw (cylinder with external threads), which need to be matched with a nut to fasten and connect two parts with through holes