The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external metric threads, specifically configured for left-hand threads with a metric fine pitch. Sized for M55 x 2 and tolerance class 6g, this gauge helps ensure mating threads meet your exacting standards during inspection, quality control, and assembly processes.

Crafted from hardened steel, the gauge delivers excellent wear resistance and long service life in busy workshop environments. The NoGo design provides a clear, unambiguous pass/fail indication, enabling quick decisions on thread quality and reducing the risk of out-of-tolerance parts entering production or field use.

• Hardened steel construction: Built to withstand daily use, resisting wear and maintaining accurate dimensions for years, even in demanding production environments.
• Left-hand metric fine NoGo sizing (M55 x 2, 6g): Precisely checks the maximum allowable size for left-hand threads, helping prevent undersize or oversize parts from passing inspection.
• Fast, easy Go/NoGo verification: Delivers rapid, clear acceptance or rejection, streamlining QC workflows and reducing downtime in manufacturing and assembly lines.

With the JBO Thread Ring Gauge, you gain a reliable tool that speeds up inspection, improves consistency across parts, and supports tighter thread tolerances. It enhances confidence in each build by making dimension checks straightforward and repeatable, helping your team deliver accurate, high-quality assemblies on schedule.