Vermont Gage 301000000 Taperlock Thread Plug Gage

Product Description

The VERMONT GAGE 301000000 is a Taperlock-style thread plug gage designed to inspect the pitch diameter and functional thread form of internal threaded components. Configured as a NoGo (Minus) member in the 1-14 UNS 3B thread class, this gage is used to verify that an internal thread does not exceed the maximum material condition. The Taperlock design provides a secure, positive fit in compatible gage handles, making it a standard choice for production floor and incoming inspection work. Each gage ships with a certificate of accuracy and is marked with nominal size, threads per inch, class of fit, and pitch diameters.

This gage is suited for inspecting 1-14 UNS (Unified National Special) 3B class internal threads in manufacturing, machining, and assembly environments. It is commonly used by machinists, quality control technicians, and tooling engineers in both job shop and production settings where thread conformance must be verified to print specifications. The NoGo function confirms that the thread pitch diameter falls within the specified tolerance and has not been cut oversize.

Key Features

• NoGo (Minus) member inspects maximum pitch diameter condition for 1-14 UNS 3B internal threads
• Taperlock shank design fits standard Taperlock-style gage handles
• Marked with nominal size, threads per inch, class of fit, and pitch diameters for clear identification
• Includes certificate of accuracy traceable to measurement standards
• NoGo length of 0.625 inches and NoGo pitch diameter of 0.959 inches
• Accepts one additional custom marking line of up to 25 characters at no extra cost

Compatibility

Designed for use with standard Taperlock-style gage handles compatible with the 1-14 UNS 3B thread plug gage series.

Installation Notes

Thread plug gages are installed and used by machinists or quality technicians - no permanent installation is required. Before use, ensure the gage shank and handle taper are clean and free of debris to guarantee a secure, accurate fit. Do not force the NoGo member through a conforming thread; the gage should not pass a correctly formed thread at maximum material condition. Follow ASME B1.2 or applicable thread gage standard practices when performing acceptance inspection.