Vermont Gage 361153010 Threaded Ring Gage 3/4-16 Unf

Product Description

The VERMONT GAGE 361153010 is a single-ring threaded ring gage machined from tool steel and used to verify the external thread dimensions of a 3/4-16 UNF fastener or threaded component. This is the Go member of a Go/No-Go gage set, meaning a conforming part will pass through the gage with hand engagement only. Classified to ANSI Class 2A tolerance, it checks that an externally threaded workpiece falls within the accepted fit range for general-purpose unified fine-thread applications. Machinists, quality technicians, and precision tradespeople use this gage in production inspection, incoming inspection, and toolroom verification workflows.

This gage is suited for inspecting 3/4-16 UNF external threads on hydraulic fittings, precision fasteners, instrumentation components, and mechanical assemblies where a Class 2A fit is specified. The 3/4-16 UNF thread form is common in plumbing adapters, HVAC system fittings, and fluid-system components that require a fine-thread engagement for tighter sealing or adjustment control. It is typically used at a bench inspection station or at point of manufacture to ensure outgoing or incoming parts meet thread specification before assembly.

Key Features

• Go-member ring gage confirms external thread is within the minimum Class 2A material condition
• 3/4-16 UNF thread form for fine-pitch unified national fine thread inspection
• Tool steel construction provides hardness and wear resistance for repeated production use
• Single-ring design for straightforward Go-only inspection tasks
• Manufactured and calibrated to NIST-traceable standards for documented accuracy
• Class 2A classification covers the most common general-purpose external thread tolerance class

Compatibility

Designed for inspection of externally threaded workpieces with a 3/4-16 UNF Class 2A thread form. Intended for use as a Go ring gage; pair with a matching No-Go ring gage to perform complete Go/No-Go acceptance inspection per applicable thread standards.

Installation Notes

Threaded ring gages are used by quality control technicians and machinists and do not require permanent installation. Handle the gage with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Store the gage in its protective case when not in use and apply a light coat of rust-inhibiting oil periodically. Do not force the gage onto a non-conforming thread, as this can damage the gage and produce false readings; hand engagement only is the correct inspection method.