The JBO Thread Ring Gauge (NoGo) is a precision external-thread gauge designed for metric fine threads. Specifically configured for right-hand M8.5 x 0.5 threads in the 6g class, it helps engineers, machinists, and quality inspectors quickly verify thread size and fit on fasteners and threaded components.

Crafted from hardened steel, this NoGo gauge delivers durable, long-lasting performance in busy workshops. Its straightforward Go/No-Go design makes it easy to spot non-conforming threads at a glance, supporting reliable quality control across production lines.

• Metric Fine, 6g NoGo design: Precisely checks external thread diameter for M8.5 x 0.5 right-hand threads, ensuring components meet the required size and fit.
• Hardened steel construction: Built for durability and wear resistance, maintaining accuracy even after repeated use on demanding shop floors.
• Easy Go/No-Go identification: Simple visual checks allow quick acceptance or rejection of parts, reducing inspection time and downtime.

Using this gauge helps speed up inspections, reduces guesswork, and improves overall part quality. It provides consistent results, minimizes rework, and supports a smooth, confident production flow on your maintenance or manufacturing floor.