wafer head self drilling screw

In the world of firearms, the M16 rifle stands out as a symbol of military innovation and design excellence. Central to the functionality and reliability of this renowned weapon is a crucial component known as the foundation bolt. Understanding the design and role of the M16 foundation bolt provides insight into the overall operation and reliability of the M16 rifle, which has been a standard issue weapon for many armed forces around the globe.


...

The 'head' of the bolt refers to its top part that sits above the threaded shaft. It's the part that provides the gripping surface for the tool used in installation or removal. The hexagonal shape offers several advantages over other head designs. Firstly, it allows for better torque application, enabling precise tightening without slipping. Secondly, the six-sided profile can accommodate larger wrenches or sockets, which can generate more torque, ideal for heavy-duty applications.

...