28 What is a Thread Cutting Screw

1. What is a Thread Cutting Screw? Thread cutting screws are considered self-tapping screws and are intended to be inserted into existing holes. In use, self-tapping screws create a thread in the material to which they are applied. This is usually metal, wood, or plastic. MW component tapping screws have higher penetration force, lower hoop stress and less crack protrusion. Threading cutting screws come in different head and body variations and can be manufactured in different sizes depending on the application. There are also many types of threading screw shanks, such as Type 1, Type 23, Type 25 and Type F. These "types" refer to the end point configuration of the threaded shaft and have a variety of uses. Fasteners Manufacturers in India What is Thread Cutting Screw is used for? Thread cutting is the process of making threads. Used to create threads on the outer surface of a cylinder or the inner surface of a bore. Tools for threading are processes called threading dies, thread lugs, or cold forming or hot forming for serial production. There are various methods of creating threads, including subtractive (thread cutting and grinding) and deformation or forming methods (rolling and forming, forming and casting). Types 17: TC screws for wood A wood tapping screw with a coarse tapping screw and a special long sharp tip with serrations to pick up shavings. Type 1: TC for metal Type 1 hardened steel threading screws are manufactured for use with harder metals such as steel, alloy steel and cast iron. They use standard machine threads. It can be used on any thickness of metal and can be used repeatedly as needed. These very strong screws are often available in much smaller sizes than machine screws. Usually available in heat treated and hardened steel, alternative materials such as brass, stainless steel and aluminum are available by special order. Phosphor Bronze Screws Type 23: TC Screws for Castings

2. These self-tapping screws are intended for use with soft die-cast metal parts such as aluminum and zinc. The tapping slot is wide and off-center for greater chip clearance and a better cutting angle. They use standard machine threads. Alternative materials such as stainless steel, monel, brass, and aluminum are available on special order, but are commonly available in heat treated, hardened steel. Type 25: TC Screws for plastics Like Type 23, Type 25 self-tapping screws have wide cutting slots. Combined with the more widely spaced threads, this screw is perfect for plastics. Less torque is required, chips break off more easily, and stress on the penetrating material is greatly reduced. Its properties also reduce breakage of more brittle plastics. Alternative materials such as stainless steel, brass, and aluminum are available by special order, but are commonly available in heat treated, hardened steel. Stud Bolts and Nuts Type F: TC Screws Type F self-tapping screws have four cut notches and are used for fastening to castings, forgings, heavy sheet metal, mild steel, plywood, and even plastic. They provide a tight, vibration-free fit with high resistance to torsional shear and tension.