The JBO Thread Plug Gauge (GO) – Metric Fine, Right Hand, 4H, M56 x 1.5 is a precision GO gauge designed to verify threaded holes against exact metric standards. It’s a reliable tool for engineers, machinists, inspectors, and quality teams looking to quickly confirm hole acceptance or rejection with confidence.

Crafted from hardened steel for exceptional durability, this plug gauge resists wear in demanding workshop environments. Its robust construction supports repeated use in quality control, ensuring consistent, long‑lasting performance while maintaining accurate hole verification over time.

• Hardened steel construction: Built to withstand daily use in busy shops, delivering long service life and reliable inspection results even in tough conditions.
• Precise metric fine size: M56 x 1.5, 4H tolerance: Engineered to exact metric standards for dependable go/no-go checks, reducing guesswork and rework.
• Ergonomic, easy-to-use design: Knurled body provides a secure grip and quick alignment, speeding up inspections and reducing fatigue during repetitive QC tasks.

Using the JBO Thread Plug Gauge (GO) helps streamline your inspection workflow by delivering fast, repeatable hole verifications. Its durable build and precise size support consistent quality across production runs, making it a trusted addition to workshops, manufacturing floors, and machining shops where accurate thread acceptance is essential.