Osg 1500102000 Plug Thread Gage 5/16-24 2B Double End

Product Description

The OSG 1500102000 is a double-end plug thread gage designed to verify internal thread conformance to a 5/16-24 UNF thread form at 2B class tolerance. One end carries the Go member and the opposite end carries the No Go member, allowing a technician to confirm both the minimum and maximum thread limits in a single tool. The gage body is machined from high speed steel for wear resistance and dimensional stability. A handle is included. This type of gage is a standard inspection tool in precision manufacturing, machine shops, and quality control environments where threaded hole acceptance must be documented.

The 1500102000 is suited for inspecting 5/16-24 UNF tapped holes in ferrous and non-ferrous workpieces across general manufacturing, aerospace component work, hydraulic fitting production, and maintenance repair operations. The 2B class designation covers the standard commercial and industrial tolerance range for unified inch internal threads, making this gage appropriate for the majority of production threading applications at this thread size.

Key Features

• Double-end design combines Go and No Go gages in one tool for efficient inspection
• 5/16-24 UNF thread form checks internal threads at standard pitch
• 2B class tolerance conforms to ASME B1.2 unified thread gage standards
• High speed steel construction resists wear during repeated use
• Handle included — ready to use out of the package
• Compact overall length of 3 inches suits bench and in-process inspection

Compatibility

Designed for inspection of 5/16-24 UNF tapped holes held to 2B class tolerance per unified inch thread standards.

Installation Notes

Thread plug gages are used by quality control inspectors and machinists — no power tools or utilities need to be shut down for gage use. Apply a light film of clean oil to the gage members before use to reduce wear and protect the ground surfaces. The Go member should pass through the full length of the threaded hole under hand pressure only; never force a plug gage with a wrench or power tool. Store the gage in its protective case or sleeve when not in use to prevent nicking the thread form.