The JBO Thread Plug Gauge (GO) is a precision inspection tool designed to quickly verify threaded holes for correct size and pitch. It’s an essential companion for machinists, quality technicians, engineers, and workshop professionals who need fast, reliable go checks during assembly or inspection.

Designed for metric fine threads, this GO gauge features a right-hand orientation and an M48 x 1.5 size with a 6H tolerance. Its hardened steel construction delivers outstanding wear resistance, helping it hold its accuracy job after job in demanding shop environments. The knurled body provides a secure grip for easy handling, even in tight spaces, making precise hole verification smooth and repeatable.

• Hardened steel construction: Built to resist wear and maintain measurement accuracy in busy workshops, extending tool life and reducing replacement costs.
• Precise metric fine-thread GO gauge: Accurately checks M48 x 1.5 holes with 6H tolerance for quick, repeatable pass/fail results in quality control.
• Ergonomic, secure grip: Knurled body and reliable seating ensure comfortable, consistent use in confined spaces, speeding up inspections.

By delivering fast, dependable thread verification, this gauge helps you confirm thread quality before assembly, minimize rework, and keep production flowing smoothly. It supports consistent results across teams and projects, making it a trustworthy addition to any inspection or machining workflow.