Vermont Gage 361105030 Threaded Ring Gage 2-56 Unc No Go

Product Description

The VERMONT GAGE 361105030 is a single-ring threaded ring gage used to inspect external threads for out-of-tolerance conditions. Designated as a No Go gage, it verifies that a threaded workpiece does not exceed the maximum material condition allowed under Class 2A tolerances. The gage is manufactured from tool steel and conforms to NIST standards, making it suitable for use in controlled inspection environments. Licensed machinists, quality control technicians, and precision tool professionals use this gage as part of a standard go/no-go inspection routine on UNC fastener threads.

This gage is designed for inspection of 2-56 UNC external threads classified to Class 2A fit, which covers the most common commercial and industrial fastener tolerance range. It is used in machine shops, manufacturing facilities, and assembly operations where thread verification is required before parts move to the next stage of production. The single-ring design means this gage handles the No Go function only and is typically paired with a separate Go ring gage to complete a full thread inspection.

Key Features

• No Go designation verifies threads do not exceed maximum material condition for Class 2A fit
• Thread size 2-56 UNC for inspection of fine-pitch external threads on small fasteners
• Tool steel construction provides durability and wear resistance for repeated gauging use
• Single-ring format for dedicated No Go inspection in a two-gage system
• Conforms to NIST standards for traceable, documented inspection processes

Compatibility

Designed for inspection of 2-56 UNC external threads to Class 2A tolerance specifications. Intended for use with a corresponding Go ring gage to complete full thread acceptance inspection per standard go/no-go gauging practice.

Installation Notes

Thread ring gages are handled and used by machinists and quality control inspectors, not installed in a mechanical system. Store the gage in a clean, dry environment and handle with care to avoid dropping or contact with abrasive surfaces that could alter the calibrated bore. Do not force the gage onto a threaded part; a correctly manufactured No Go gage should not fully thread onto a conforming workpiece. Periodically check the gage against a calibrated setting plug to confirm it remains within tolerance.