The JBO Thread Ring Gauge (GO) – Metric Fine – Right Hand – 6g – M72 x 4 is a precision tool for inspecting external threads. It helps engineers, machinists, and quality teams quickly verify that threaded components meet the required minimum diameter and the M72 x 4 standard.

Made from hardened steel for durability, this GO gauge is built to withstand busy shop floors and everyday wear, while its straightforward design makes it easy to identify components that conform to specifications during quality control and precision engineering tasks.

• Rapid go/no-go verification for M72 x 4 threads: Quickly determine whether an external thread meets the minimum diameter, speeding up QC inspections and reducing rework.
• Durable hardened steel construction: Built to withstand daily use in busy workshops, offering long tool life and resistance to wear and corrosion.
• User-friendly, right-hand orientation: Easy to align and insert during inspection, ensuring consistent results with minimal setup and fewer measurement errors.

By standardizing threaded inspections, the GO gauge helps streamline workflows, reduce downtime, and deliver consistent, reliable measurements across every part tested. The rugged steel construction supports long service life in demanding environments, while its clear sizing and simple operation help teams onboard quickly and maintain high quality in M72 x 4 threaded assemblies.