The JBO Thread Ring Gauge (GO) – Metric Fine, Left Hand, 6g, M45 x 2 is a precision tool designed to verify external threads on fasteners, fittings, and machined parts. It’s ideal for engineers, quality inspectors, builders, and workshop teams who need quick, reliable go/no-go checks to confirm parts meet metric fine thread standards. With its tight dimensional control, this gauge helps you streamline inspection and maintain consistent quality across production.

• Exact metric fine sizing for M45 x 2 (6g GO): provides precise go/no-go checks on external threads, ensuring conformance with standard metric fine thread tolerances at a glance.
• Hardened steel construction: delivers excellent wear resistance and long service life in demanding environments, keeping calibration stable through heavy use.
• Left-hand thread compatibility: specifically designed to inspect left-hand thread components, expanding its utility across a wider range of applications and parts

Used in quality control and production settings, this GO gauge helps you confirm thread conformity quickly, reducing rework and preventing out-of-spec parts from advancing in the manufacturing process. Its durable build and precise dimensions support repeatable inspections, so your team can maintain tight tolerances, improve workflow efficiency, and deliver consistently reliable threaded assemblies.