Vermont Gage 361000000 Thread Ring Gage Set 7/8-14 Unf

Product Description

The VERMONT GAGE 361000000 is a Go/NoGo thread ring gage set designed to inspect the pitch diameter and functional thread of externally threaded products. This set covers 7/8-14 UNF Class 3A threads, making it a precision inspection tool used in manufacturing, machining, and quality-control environments. Each gage is marked with the nominal size, threads per inch, class of fit, and pitch diameters. The set ships with a certificate of accuracy. Go ring pitch diameter is 0.8286 inches; NoGo ring pitch diameter is 0.8245 inches. Both rings have a length of 11/16 inches.

This gage set is suited for shops and inspection departments verifying external 7/8-14 UNF 3A threaded fasteners, fittings, and machined components. Typical users include quality-control inspectors, machinists, and toolroom technicians working to unified fine thread standards. The Go ring confirms that the thread assembly will accept a mating part; the NoGo ring confirms the pitch diameter does not exceed the maximum material condition limit.

Key Features

• Inspects pitch diameter and functional thread on external 7/8-14 UNF 3A threaded parts
• Go pitch diameter: 0.8286 inches; NoGo pitch diameter: 0.8245 inches
• Both rings are 11/16 inches in length
• Each set is supplied with a certificate of accuracy
• Marked with nominal size, threads per inch, class of fit, and pitch diameters
• Optional custom marking of up to 25 characters available at no additional cost

Compatibility

Designed for use with external 7/8-14 UNF Class 3A threaded workpieces inspected to unified fine thread standards.

Installation Notes

Thread ring gages are handled and applied by machinists, toolroom personnel, or QC inspectors - not field-installed tradespeople. Store gages in a clean, dry environment and handle with care to avoid damage to the precision-ground bore. Apply light gage oil before use and wipe clean after each inspection cycle. Do not force a ring gage onto a threaded workpiece, as this can damage the gage and produce false readings.