WESTport Gage provides a full range of Unified Miniature Screw Thread Plug Gages per the American Standard B1.10M 2004 and the equivalent ISO Recommendation. This thread designation is also referred to as the UNM Series. The threads in this series are interchangeable with the American, British, Canadian and ISO standardization programs. Unified Miniature Screw thread ring gages are intended for use in watches, instruments, and miniature mechanisms.
The series covers a diameter range from .30mm to 1.40mm (.0118” ‐ .0551”) and supplements the Unified and American thread series. WESTport also manufactures UNM forming taps. WESTport’s team of engineers can assist you with properly selecting the correct type of miniature gage and cutting tools for all of your UNM thread applications.