slotted hex washer head

A wafer head screw, as the name suggests, has a flat, thin, and circular head, resembling a wafer. The head is usually larger than the screw's body, providing a broad bearing surface that distributes the load evenly and reduces the chances of damage to the material being fastened. The self-tapping attribute refers to the screw's ability to cut its way through the material it is inserted into, forming threads as it goes, hence the term self-tapping.

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However, despite their many benefits, using self-drilling exterior wood screws requires some consideration. It's essential to choose the right size and type of screw for the job at hand. Factors such as the thickness of the wood, the load-bearing requirements, and the environmental conditions should all be taken into account. Furthermore, proper torque control during installation is crucial to prevent over-tightening, which could damage the material.

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