How to Choose the Right Screw?

Choosing the right screw depends on the type of material, the mechanical load, and the required thread type. The metric system (e.g., M8) and imperial system (e.g., 1/4"-20 UNC) differ in dimensions and usage.

What Does "Drill Size for Thread" Mean?

This is the diameter of the hole you should drill into the material before tapping the thread with a tap tool. Using the correct drill size ensures accurate and strong threading.

Metric vs. Imperial Threads

The metric system is commonly used in Europe and Asia, with sizes like M6, M8, and M10. The imperial (inch-based) system is more common in the United States and Canada, with threads like 1/4"-20 UNC. It's important to understand both systems when working with international components.