Osg 1500103900 Plug Thread Gage 1-1/8-12 2B Double End

Product Description

The OSG 1500103900 is a double-end plug thread gage designed to verify internal thread quality on 1-1/8-12 UNF threaded workpieces to the 2B tolerance class. One end carries the Go member and the opposite end carries the No Go member, allowing a single tool to confirm both minimum and maximum thread acceptance in one setup. The gage body is machined from high speed steel for wear resistance and dimensional stability under repeated use. A handle is included. This tool is used by machinists, quality control inspectors, and maintenance technicians working to ASME or equivalent thread inspection standards.

This gage is suited to production floor and inspection bench applications wherever 1-1/8-12 internal threads must be verified against 2B class tolerances. Typical use cases include incoming inspection of threaded components, in-process verification during machining operations, and final acceptance checks in manufacturing environments across mechanical, hydraulic, and industrial assembly work. The double-end configuration reduces tool changeover time compared to separate Go and No Go gages.

Key Features

• Double-end design combines Go and No Go members in a single gage
• High speed steel construction provides hardness and wear resistance for extended service life
• Checks 1-1/8-12 thread size to 2B tolerance class per standard thread gage practice
• Handle included for immediate use out of the box
• Compact overall length of 8 inches suits both bench and in-line inspection use

Compatibility

Designed for inspection of 1-1/8-12 UNF internal threads classified to the 2B tolerance class in standard thread gage applications.

Installation Notes

Thread plug gages require no permanent installation. Ensure the threaded workpiece is clean and free of chips or coolant before gaging. Apply the Go member first; it should pass through the full thread length with hand pressure only. The No Go member must not enter more than two turns. Gages should be periodically recalibrated per your quality management procedures to maintain traceability.