Conclusion

Self-drilling screws, also known as Tek screws or self-tapping screws, are engineered with a drill bit tip that allows them to penetrate materials without the need for a separate drilling operation. This feature is particularly advantageous when working with thick steel, as it reduces the time required for assembly and helps ensure a secure, tight fit.

1. Dimensions The M20 foundation bolt has a diameter of 20 mm and typically comes in various lengths, depending on the required application. The length can range from 50 mm to over 200 mm, and it’s essential to choose a length that suits the thickness of the material being anchored.

2. Improved Aesthetics The countersunk head design provides a neat appearance, especially in visible or decorative applications. This feature is vital for projects where aesthetics are as crucial as functionality.

Hex head bolts and nuts are ubiquitous in both industrial and domestic applications. They are commonly used in