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.

Product details:

Application:

12size,Hot Sales 160pc Hardware Hex Head Set Screw Assortment,which can be used for

different place.Packing in one plastic box that is good for sale in supermarket.The size can be

found in the color card attached in the box.The goods is wide used in the factory and home.

Advantage of us: 

1.Professional in Production and Marketing

2.Quality and Qty assured,Timely

3.Fast and professional response to your email

4.Competitive factory price

5.Buyer’s logo/size/color are accepted,buyer’s design is welcome