Vermont Gage 361105020 Threaded Ring Gage 2-56 Unc 3A Go

Product Description

The VERMONT GAGE 361105020 is a single-ring threaded ring gage used to verify the external thread dimensions of fasteners and threaded components machined to a 2-56 UNC profile. Classified as a Go gage under Class 3A tolerances, it confirms that a threaded part falls within the acceptable minimum material condition for fit and function. Made from tool steel and traceable to NIST standards, this gage is a precision inspection instrument used in machine shops, manufacturing facilities, and quality control environments. Machinists, quality technicians, and inspection professionals use this type of gage as part of standard thread verification procedures.

This gage applies to inspection of number 2-56 UNC external threads, which are common in small fastener applications including electronics assemblies, instrument hardware, and light mechanical components. The Go designation means the gage must pass freely over a conforming threaded part. It is used as a single-ring Go gage in a Go/No-Go inspection workflow, confirming the part does not exceed the maximum material limit. Suitable for production floor and incoming inspection use wherever 2-56 UNC Class 3A threaded parts are manufactured or received.

Key Features

• Go classification verifies minimum material condition on 2-56 UNC external threads
• Class 3A tolerance rating for close-fit threaded fastener applications
• Single-ring design for straightforward Go inspection without a combined gage body
• Tool steel construction for wear resistance and dimensional stability during repeated use
• NIST-traceable standards compliance supports documentation in quality management systems

Compatibility

Designed for inspection of external threads conforming to the 2-56 UNC Class 3A thread standard. Applies wherever 2-56 UNC externally threaded fasteners or components require dimensional verification to Class 3A Go tolerance criteria.

Installation Notes

Thread ring gages are installed and used by machinists or quality inspection technicians and require no permanent mounting. Before use, clean both the gage and the threaded workpiece to remove chips, oil, and debris that could affect the result. Apply gage handling best practices to avoid dropping or mishandling, as impact damage can alter gage calibration. Periodic recalibration against NIST-traceable masters is recommended to maintain measurement integrity over time.