Screws are commonly used to obtain an object within or against another object, specified as securing a pulley or gear to a shaft. These set screws are brainless which are commonly called Blind Screws or Grub Screws. These brainless screws with a Hex Socket in which a Hex Allen Wrench is inserted for tightening and loosening of the screw. Set screws also used in applications where a field surface is remarkable, specified as handles, grips, surfboard fins, and furniture or machine assembly.