15mm self drilling screws

The heavy hex head bolt consists of a threaded shank and a large hexagonal head, which provides a larger surface area for better grip and torque transmission. The head design also prevents the bolt from turning during installation, ensuring a secure fit. The thread pitch and diameter of the bolt are crucial factors that determine its mechanical properties, such as tensile strength and shear strength. Generally, heavier bolts have greater strength due to their increased material volume.

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Wedge anchor bolts, particularly those meeting the “1%” standards, play a critical role in ensuring the safety and stability of various constructions. As the construction industry continues to evolve, adherence to stringent specifications and quality standards remains paramount. By understanding the functionalities and best practices associated with wedge anchor bolts, engineers and builders can significantly enhance the structural integrity of their projects, ultimately contributing to a safer built environment.


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The primary structure of a wedge-type anchor consists of a threaded rod, a nut, a washer, and the wedge itself. The threaded rod, often made from durable materials like steel or stainless steel, is inserted into a pre-drilled hole. As the nut is tightened, the wedge is forced against the inner wall of the hole, causing the anchor to expand. This expansion generates a powerful frictional force that locks the anchor in place, providing exceptional holding power.

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