The helix of the thread lies along a cylinder, in other words. Straight Threads are parallel to the Axis. Two major styles of thread are Straight versus Tapered. UNJC, UNJF, and UNJEF SizesĨ2Plus Custom diameter and TPI combinationsġ57Plus Custom diameter and Pitch combinationsġ9Plus Custom diameter and TPI combinationsġ6Plus Custom diameter and TPI combinations

ISO STI – Screw Thread inserts such as Helicoil. UN STI – Screw Thread inserts such as Helicoil. UNM – Miniature Thread Sizes for Watchmaking and similar applications Premium Thread Families added by G-Wizard Thread Calculator

GW Thread Calculator allows Custom diameter and TPI Unified National: UN, UNC, UNF, UNEF, UNSģ71GW Thread Calculator allows Custom diameter and TPI Here are just a few that our G-Wizard Thread Calculator supports: Thread Families Supported by G-Wizard Thread Calculator Thread Family There are a number of Thread Standards out there, and being familiar with the names of the common ones is all part of thread terminology. You want to be able to purchase off-the-shelf fasteners for particular threads, or be sure that when two parts meant to thread together are made by two manufacturers that they will indeed fit. The point of having these standards is interchangeability.

The exact specifications for any thread are determined by Thread Standards. This is your easy guide to screw thread terminology. Fortunately, there aren’t that many terms and they’re not hard to understand. Threads are an important part of our work, and so it just goes with the territory.

Having a good grasp of thread terminology is important for any CNC’er or Machinist.

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