The JBO Thread Ring Gauge (GO) – Metric Fine is a precision tool designed to verify external thread diameters on fasteners, fittings, and machined parts. Built for machinists, inspectors, and quality teams, it provides a clear Go check for right-hand threads in the 6e class, including M9 x 0.75. Crafted from hardened steel, this gauge stands up to daily use in demanding workshops and QC environments.

• Fast go/no-go verification: Quickly determine whether an external thread matches the 6e, right-hand M9 x 0.75 specification, speeding inspections and reducing guesswork.
• Hardened steel, wear‑resistant durability: Built to withstand daily handling in busy shops and QA labs, delivering long service life even under heavy use.
• Consistent, repeatable measurements: Precision-ground internal threads and smooth surfaces provide reliable checks across production lots, supporting traceability and quality-control programs.

Used across manufacturing and quality environments, this gauge helps you speed up inspections, reduce downtime, and ensure every threaded component meets exact standards. The robust hardened-steel construction minimizes wear, while the Go-side feedback gives you clear, unambiguous results you can trust for reliable quality assurance.