The JBO Thread Plug Gauge (GO) — Metric Fine, Right Hand, 6H, M148 x 1.5 — is a precision inspection tool used to verify threaded holes against exact specifications. It supports quick, reliable quality checks in manufacturing, assembly, and maintenance by confirming that a hole accepts a true thread before parts are assembled.

Crafted from hardened steel, this gauge delivers lasting wear resistance in demanding environments. The knurled body and clearly defined GO design make it easy to identify properly threaded holes, helping teams speed setup and reduce the risk of misreads during inspections.

• Hardened steel construction: Built to resist wear in busy workshops, delivering long-lasting accuracy and repeatable results over many inspections.
• Precise metric fine thread specification (M148 x 1.5) with 6H tolerance: Ensures reliable GO checks for high-precision holes, helping you meet standard tolerances and reduce defects in production.
• User-friendly design for fast inspection: Knurled body and clearly identified GO feature let operators grip securely and confirm proper threading quickly, even with gloves.

Using the JBO GO gauge streamlines threading inspections, cuts setup time, and improves overall accuracy across batches. It supports quality control workflows by providing a simple, repeatable check that your threaded holes meet the required metric fine standard, minimizing fit issues and costly rework. Built for durability, this gauge is a dependable tool for machinists, inspectors, and maintenance teams alike.