What is self drilling screw ?

Jiaxing Runyee Metal Technology Co., Ltd is specialized mainly in manufacturing self drilling screws, drywall gypsum screws, chipboard screws, roofing screws with head painting, self tapping screws, concrete screws,  construction screws. 

A self drilling screw is a type of screw that has similar design features with a drill bit with a point that enable it to drill its own hole.

As the name implies, self-drilling screw do not require a pilot hole in order to perform as a fastener. They are designed to work on soft steel, wood and metals.  

A self drilling screw or bolt has a drill bit at its end point.

The middle is threaded to grip the material which is drilled into.

They usually have a hexagonal head, hex washer head, hex flange head, flat head, pan head, bugle head, modified truss head, button head, pan framing head, oval head

Self drilling screws are also known as tek or self tapping screws. It should also be noted that self drilling screws are available in both fine thread and coarse thread types.