A Thread Ring Gauge – Metric Fine is a precision inspection tool used to verify the accuracy of external fine-pitch metric threads on bolts, screws, and other threaded components. It is an essential instrument in machining, engineering, and quality control to ensure that threads meet exact specifications and function correctly.
Typically supplied as a GO and NO-GO set, the GO ring gauge checks that the thread is within the acceptable minimum size and can pass smoothly over the external thread. The NO-GO gauge verifies that the thread does not exceed the maximum allowable limit, ensuring proper dimensional control and fit.
