Why are hexagon screws used in many industrial equipment?  What's so good about it?  The screw head of the hexagon screw outside is round, the middle is concave hexagon, such a structural advantage is actually very obvious.  

1 bear large load, hexagonal screw force surface has six, relative to only two face of the word screw and cross screw to carry the screw.  
2. Can be immersed in processing, that is, the whole nut is sunk to the inner surface of the workpiece, can keep the surface of the workpiece smooth, beautiful.  
3. Easy to install, compared with the outer hexagon screw, hexagon is suitable for many assembly occasions, such as narrow occasions, so it is very convenient for assembly and maintenance, debugging is also convenient.  
4. It is not easy to disassemble. The commonly used tools we use at ordinary times are adjustable spanner, screwdriver and fixed spanner.  

Socket head screw material generally made of stainless steel, carbon steel, alloy steel, and other types of screws on the material basically no difference, the higher performance level, the greater the intensity, choosing screw, we are going to use in strict accordance with the requirements of choosing a suitable performance rating screw, different grade, nature price is not the same.