1 4 self drilling screws

The functionality of metal expansion nuts centers around the principle of mechanical expansion. Upon the application of torque, the screw or bolt is threaded into the nut, which, in turn, causes the nut to expand outward. This outward expansion presses the sides of the nut against the inner walls of the hole it occupies, creating a tight fit. The added friction and mechanical grip prevent the nut from loosening over time, even in dynamic conditions.


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Wafer head screws, as the name suggests, feature a flat, round head with a thin profile, resembling a wafer. This design not only ensures a clean, aesthetic finish but also provides a larger surface area for better load distribution, minimizing the risk of material splitting. Their primary function is to securely join metal studs, which are commonly used in non-load bearing walls, partitions, and ceiling systems, to create a robust and stable structure.

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