This article was updated Jan. 17, 2023. It was originally published Oct. 21, 2004. Using the correct thread is critical for proper mating and replacing hydraulic fittings. First and foremost, it is a ...

I quickly calculate proper tap-drill diameters using this simple formula. Tap-drill diameter equals nominal diameter minus thread pitch. For example, drill size for a 3/8-16 thread is 0.375 0.0625 ...

The most used screw thread forms are those having symmetrical sides with inclined at equal angles. The Unified, the Whitworth and the Acme forms fall into this category. Symmetrical threads are easy ...

For any sort of precision machine, precision adjustability is required. For the hacker this usually involves an adjustment screw, where the accuracy is determined by the thread pitch. This was not ...

Thread gages are dimensional instruments for measuring and/or verifying thread size, pitch or other parameters. A variety of thread gaging instruments and tools exist such as measuring wire, tri-roll ...