Vermont Standard Metric Thread Plug Gages GO / NO GO Vermont's Thread Gages allow you to inspect the pitch diameter and the functional thread for internal threaded products. All stock Metric Thread Plug Gages are made to Class X tolerances per ASME B1.16M (Metric M Series Screw Threads). A Certificate of Accuracy is included with each gage. Available in 6H, and each Thread Plug Gage is marked with nominal size, threads per inch, class of fit and pitch diameters. Features include... M1.6x.35 Threads GO and NO GO Set Certificate of Accuracy included Select Taperlock, Reversible, or Set Plug from Pull Down Menu. Taperlock Plug 6H... GO Gage Length: 6.4mm NO GO Gage Length: 6.4mm GO Pitch Diameter: 1.373mm NO GO Pitch Diameter: 1.458mm Reversible Plug 6H... GO Gage Length: 17.5mm NO GO Gage Length: 17.5mm GO Pitch Diameter: 1.373mm NO GO Pitch Diameter: 1.458mm Set Plug 6g... GO Gage Length: 5.6mm NO GO Gage Length: 5.6mm GO Pitch Diameter: 1.354mm NO GO Pitch Diameter: 1.291mm 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.