The JBO Thread Ring Gauge (NoGo) is a metric fine, right-hand gauge designed to verify external thread diameters on fasteners, fittings, and machined components. It's ideal for manufacturing shops, quality labs, maintenance teams, and engineers who need quick, confident pass/fail checks during inspection and assembly.

Crafted from hardened steel for durability, this NoGo ring gauge resists wear and maintains accurate measurements even in high-use environments. It features metric fine dimensions for M9 x 0.75 threads with a 6g fit and a right-hand orientation to align with standard metric threading. The intuitive NoGo design makes it easy to identify non-conforming parts at a glance, supporting precise quality control and repeatable results.

• Durable hardened steel construction: built to withstand daily use on shop floors and in laboratories, delivering long-lasting performance and stable measurements.
• Precise metric fine threading (M9 x 0.75) with 6g tolerance: ensures accurate external thread checks and reliable pass/fail decisions across standard metric sizes.
• Right-hand orientation with clear go/no-go indication: enables fast, confident inspections and quick identification of non-conforming parts, reducing rework and downtime.

Whether you’re verifying components for assembly, quality control, or routine maintenance, this gauge helps you work faster, make better decisions, and maintain consistent results across production runs.