thread types When choosing screws, many people only look at size and head type. However, in industrial equipment, what truly affects stability and service life is the thread type. Among all thread designs, Machine Threads are the most fundamental type used in industrial equipment. This is because industrial machinery requires precise mating and repeated assembly, not a one-time bite into the material. --- 1. What Is a Machine Thread? A Machine Thread refers to a standard thr

Metric,ANSI／ASME,BS In machining and maintenance, many people run into the same problem:Two fasteners look similar in size and even thread in, but they won’t tighten, and when you remove them, the threads are already damaged. In most cases, it’s not poor machining or low-quality screws—it’s simply the wrong thread system from the start. In practice, most screw threads come from three major systems: Metric threads, Unified threads (ANSI/ASME), and Whitworth threads (BS). Their