A set screw is a type of screw generally used to secure an object within or against another object. The most common examples are securing a pulley or gear to a shaft. Set screws are usually headless (also called blind), meaning that the screw is fully threaded and has no head projecting past the major diameter of the screw thread. A blind set screw (known in the UK as a grub screw, quite possibly from its figurative resemblance to a soil-dwelling grub) is almost always driven with an internal-wrenching drive, such as a hex socket (Allen), star (Torx), square socket (Robertson), or slot. The set screw passes through a threaded hole in the outer object and is tightened against the inner object to prevent it from moving relative to the outer object. It exerts compressional or clamping force through the bottom tip that projects through the hole.
A potentiometer knob with a set screw for locking it in place.
An example application is when a set screw is screwed into a pulley hub so that its end-point bears firmly against the shaft. The fastening action is by friction between the screw and the shaft, often (but not always) with some amount of elastic or plastic deformation of one or both.
Zinc plating precision socket set screw
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Dongguan mingxing hardware product factory was founded in 1998, is located in Dongguan, the world’s leading hardware parts processing base.
Our products are very popular in the industry. We have many well-known customers, suck as Fastenal, Emerson, ZTE, Hisense, Sony, San Martin, etc. At the same time, the metal fasteners are widely used in a variety of products, including consumer electronics, mobile phones, printers, tablets, power tools, etc.
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