Vermont Metric Thread Plug Gage Assembly, GO/NOGO, 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... M3.0x.50 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: 5.6mm NO GO Gage Length: 4.0mm GO Pitch Diameter: 2.675mm NO GO Pitch Diameter: 2.775mm Reversible Plug 6H... GO Gage Length: 20.6mm NO GO Gage Length: 20.6mm GO Pitch Diameter: 2.675mm NO GO Pitch Diameter: 2.775mm Set Plug 6g... GO Gage Length: 9.5mm NO GO Gage Length: 9.5mm GO Pitch Diameter: 2.655mm NO GO Pitch Diameter: 2.580mm Need a Certificate of Calibration? These Metric Thread Plug Gages are shipped "off-the-shelf" without a Certificate of Calibration. A Calibration Service from Vermont Gage can add up to 1 week to the ship out date. If you need a Certificate of Calibration, you can order one of the following Calibration Services with the Gage... Standard Calibration Includes a "long form" Certificate of Calibration that is traceable to NIST. A GO/NOGO Thread Plug Gage Assembly will include 2 Certificates of Calibration. 1 for the GO member 1 for the NOGO member ISO 17025 Accredited Calibration Includes 2 ISO 17025 Accredited Certificates of Calibration. 1 for the GO member 1 for the NOGO member