double ended threaded bolt

In conclusion, countersunk self-drilling screws for steel are an efficient, reliable, and versatile fastening solution for a wide range of construction projects. Their ability to drill and fasten in one step, combined with their excellent holding power and durability, make them a popular choice for professionals and DIY enthusiasts alike. By choosing countersunk self-drilling screws for steel, you can complete your projects quickly and confidently, knowing that your connections will be strong and secure.


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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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