The JBO Thread Ring Gauge (NoGo) – Metric Coarse, Right Hand, 6g, M68 x 6 is a precision inspection tool designed to verify external threads on coarse metric sizes. It’s ideal for quality control teams, machinists, engineers, and inspectors who need fast, repeatable checks to ensure parts meet exact thread standards.

Crafted from hardened steel for long-lasting durability, this NoGo gauge withstands daily use in busy workshops and production lines. Its simple, intuitive design makes it easy to identify non-conforming threads at a glance, supporting consistent fitment and reliable performance in assemblies.

• No-Go limit for quick conformance checks: Instantly identify under-spec threads by comparing against the No-Go limit, helping you reject out-of-spec parts at a glance and keep production moving.
• Durable hardened steel construction: Built to withstand daily use in busy workshops and production lines, this gauge resists wear and corrosion, delivering consistent accuracy over many inspections.
• Precise metric coarse sizing (M68 x 6): Precisely sized to the M68 x 6 coarse thread standard, ensuring reliable pass/fail decisions and reducing guesswork during inspections.

Using the JBO NoGo Ring Gauge in your QC workflow helps streamline inspections, standardize thread verification, and ensure every threaded connection meets its intended fit. This leads to fewer defects, less rework, and more consistent performance across assemblies.