The JBO Thread Ring Gauge (NoGo) – Metric Fine, Right Hand, 6h, M8 x 0.75 is a precision tool for verifying external threads on fasteners and machined parts. Designed for engineers, inspectors, machinists, and workshop teams, it helps you confirm that threads meet exact size and tolerance specifications.

Crafted from hardened steel, this NoGo ring gauge delivers durability and wear resistance for long service life in demanding shop environments. The metric fine specification (M8 x 0.75, right-hand, 6h) supports fast, reliable identification of non-conforming threads, making quality checks quicker and more accurate.

• Precise metric fine sizing (M8 x 0.75, right-hand, 6h): Calibrated to meet the metric fine thread standard with 6h tolerance, providing reliable pass/fail checks on external threads.
• NoGo design for fast quality control: The NoGo configuration delivers quick visual and tactile cues to flag out-of-tolerance threads, speeding inspections and reducing rework.
• Rugged hardened steel construction: Built to withstand daily workshop use and maintain dimensional accuracy, delivering long life and consistent results.

By integrating this gauge into your inspection routine, you’ll streamline QC workflows, minimize downtime, and ensure that every threaded part meets your standards before it proceeds to assembly or shipping.