Vermont Gage 361147030 Threaded Ring Gage 5/8-11 Unc

Product Description

The VERMONT GAGE 361147030 is a single-ring threaded ring gage used to verify that an external thread does not exceed its maximum material condition. Classified as a No Go gage to the Class 2A tolerance standard, it checks 5/8-11 UNC threads for out-of-tolerance conditions. When a properly produced thread refuses entry of the No Go gage, the part passes. Machined from tool steel, this gage delivers the hardness and dimensional stability required for repeatable inspection work in a shop or receiving environment. NIST-traceable standards govern its calibration and manufacture.

This gage is used in manufacturing, machine shops, and quality control environments where 5/8-11 UNC external threads must be inspected for conformance to Class 2A fit requirements. It is a standard tool for incoming inspection, in-process quality checks, and final inspection of fasteners, fittings, and machined components with 5/8-11 UNC threads. Machinists, quality technicians, and metrology professionals use this gage as part of a go/no-go inspection pair or as a standalone no-go check.

Key Features

• No Go classification checks that external threads do not exceed maximum material condition for Class 2A fit
• 5/8-11 UNC thread form for standard unified coarse thread inspection
• Single ring design for straightforward, dedicated no-go inspection
• Tool steel construction provides hardness and dimensional stability for long service life
• Manufactured to NIST-traceable standards for reliable, documented accuracy

Compatibility

Designed for inspection of external 5/8-11 UNC Class 2A threaded parts, including fasteners, fittings, and machined components. Intended for use as the No Go member of a Class 2A threaded ring gage set or as a standalone no-go inspection tool.

Installation Notes

Threaded ring gages are handled and stored by metrology or quality personnel, not installed in a system. Keep the gage clean and lightly oiled when not in use to prevent corrosion. Do not force the gage onto a thread under inspection — No Go gages must not pass, and applying torque to force entry will damage the gage and invalidate the inspection result. Periodic recalibration against NIST-traceable masters is required to maintain measurement integrity.