Vermont Metric Thread Ring Gage Set, GO/NOGO, Vermont's Thread Gages allow you to inspect the pitch diameter for threaded products. All stock Thread Ring Gages are made to Class X tolerances per ASME B1.16M (Metric Series Screw Threads). A Certificate of Accuracy is included with each gage. Each Metric Thread Ring Gage is marked with nominal size, class of fit and pitch diameters. Features include... M39.0x4.00 6g Threads GO and NO GO Set Certificate of Accuracy included Made from Tool Steel, 60/62 Rc. Specifications include... GO Gage Length: 31.8mm NO GO Gage Length: 20.6mm GO Pitch Diameter: 36.342mm NO GO Pitch Diameter: 36.118mm Need Calibration? Calibration is an additional service that can be added to most thread gages. If you need calibration please send an email to sales@greatgages.com or you can find more information on how to reach us on our Contact Us page. Certificate of Accuracy All of our manufacturers include a Certificate of Accuracy with their Thread Gages off-the-shelf. These Certificates are statements that the gage has been verified to be accurate from the manufacturer, and that the manufacturer has used NIST-traceable gages to perform this verification. However, this is NOT a Certificate of Calibration. Certificate of Calibration None of our manufacturers include a Certificate of Calibration with their gages off-the-shelf. If the customer needs a Certificate of Calibration, that is a NIST-traceable document with verified readings, this is an additional Calibration Service that needs to be quoted with the gage. The standard lead time for a Calibration Service adds about 1-week to the lead time of the gage.
