Osg 1500102500 Plug Thread Gage 1/2-13 2B Double End

Product Description

The OSG 1500102500 is a double-end plug thread gage designed to inspect 1/2-13 UNC threads to the 2B tolerance class. One end is the Go member; the other is the No Go member. The Go end verifies that a threaded hole accepts a mating fastener without interference. The No Go end confirms the hole has not been tapped oversize. Both ends are machined from high speed steel for wear resistance and dimensional stability under repeated use. A handle is included. Machinists, quality inspectors, and field service technicians use this gage to verify tapped holes in metal fabrication, maintenance, and repair applications.

This gage is suited for production floor and field inspection of 1/2-13 tapped holes in steel, aluminum, and similar materials. The 2B class specification matches the most common commercial and industrial fastener fit requirement for 1/2-13 UNC threaded holes. The double-end design consolidates both Go and No Go functions into a single tool, reducing the number of gages required on a job.

Key Features

• Double-end configuration combines Go and No Go members in one tool
• Inspects 1/2-13 UNC threads to the 2B tolerance class
• High speed steel construction for dimensional stability and extended service life
• Handle included — no separate holder required
• Compact overall length of 4 inches for easy handling in tight access areas

Compatibility

Designed for inspection of 1/2-13 UNC tapped holes held to the 2B thread class tolerance. Suitable for use in metalworking, mechanical assembly, and maintenance environments where 1/2-13 fastener fit must be verified.

Installation Notes

Thread plug gages are inspection tools and do not require installation in a system. Handle the gage carefully to avoid drops or impacts that can alter the calibrated dimensions. Clean the tapped hole of chips and cutting fluid before gaging. Periodically verify the gage against a calibrated setting standard to confirm it has not worn beyond tolerance limits.