These GO thread plug gauges are essential tools for accuracy in threaded-hole inspection. The JBO Thread Plug Gauge (GO) – Metric Fine, Right Hand, 6H, M45 x 3 is designed for quick, reliable checks that confirm holes meet the required size, pitch, and tolerance. Crafted from hardened steel, it stands up to demanding shop environments while delivering repeatable results for quality control teams, machinists, and inspectors across automotive, machinery, and manufacturing applications.

• Precise GO gauge for metric fine threads: Quickly verify that a threaded hole accepts the gauge to confirm M45 x 3 size and 6H tolerance, reducing setup guesswork and rework.
• Durable hardened steel construction: Built to resist wear and maintain accuracy through heavy use, delivering long-lasting reliability in busy workshops.
• Right-hand design for fast, intuitive checks: Specifically oriented for standard production workflows, making it easy to identify properly threaded holes with confidence and speed.

Using this GO gauge speeds threaded-hole inspection, supports consistent pass/fail decisions, and helps keep assemblies moving. The combination of precise metric fine sizing and rugged steel construction minimizes downtime, improves measurement reliability, and extends tool life in quality control, manufacturing, and maintenance environments.