Description: _x000D_ A set screw is a type of screw generally used to secure an object within or against another object without using a nut. The most common examples are securing a pulley or gear to a shaft. Set screws are fully threaded and has no head projecting past the major diameter of the screw thread. These set screws are driven with a internal-wrenching hex socket drive. _x000D_ _x000D_ _x000D_ Features: _x000D_ These set screws are made from 304 stainless steel for rust protection, durability and long service life. _x000D_ _x000D_ They are multipurpose hex socket head set screws that you can simple drive with hex keys._x000D_ _x000D_ There are 12 common sizes and you can concentrate on your project without worrying about not having the correct screws._x000D_ _x000D_ Get these total 240 pieces screws so you won't be running off to the hardware store for a set screw for quite a while. _x000D_ Well packed and assorted in a resealable transparent box for convenient carry and storage._x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: 304 stainless steel _x000D_ Type: Hex Socket Cup point_x000D_ _x000D_ Color: Silver _x000D_ Size and Quantity: _x000D_ M3*3 20pcs _x000D_ M3*4 20pcs _x000D_ M3*5 20pcs _x000D_ M3*6 20pcs _x000D_ M4*4 20pcs _x000D_ M4*5 20pcs _x000D_ M4*6 20pcs _x000D_ M5*5 20pcs _x000D_ M5*8 20pcs _x000D_ M6*6 20pcs _x000D_ M6*10 20pcs _x000D_ M8*8 20pcs _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 240pcs x Screws _x000D_ 5pcs x Hex Keys(M1.5, M2, M2.5, M3, M4)