Self-Drilling Screws

Hex Head Self-Drilling Screws

Hex self-drilling screws feature a six-sided head designed for maximum torque transmission without cam-out during the drilling and tapping sequence. The head geometry permits the use of high-power socket drivers, facilitating the penetration of thick structural steel components. Often integrated with a washer face and an EPDM rubber seal, they distribute clamping loads broadly while providing a weather-tight barrier. They are the standard choice for exterior metal roofing, heavy structural purlin connections, and industrial ductwork mounting.