The JBO Thread Ring Gauge (NoGo) is a precision tool for measuring external threads on components. Designed for metric fine threads, it checks M12 x 0.5 right-hand threads to help verify part compliance. Ideal for engineers, machinists, inspectors, and quality teams, it speeds up acceptance decisions with clear go/no-go results.

Crafted from hardened steel, this NoGo gauge stands up to daily use in busy workshops and production lines. A knurled edge provides a secure grip, and a distinct red reference mark helps you orient the gauge quickly during setup, reducing misreads and downtime. Built to deliver consistent, repeatable results, it supports reliable quality control across lots and assemblies.

• Fast metric fine-thread verification: Quickly confirms external threads conform to M12 x 0.5 right-hand specifications (6h), enabling fast Go/No-Go decisions and reducing inspection time.
• Durable hardened steel construction: Designed for rugged use in demanding environments, delivering long service life and sustained accuracy through repeated inspections.
• Clear, operator-friendly design: Knurled edge for secure handling and a visible red reference mark for quick orientation, helping operators identify non-conforming parts with confidence.

Using this gauge helps streamline inspections, minimize rework, and keep production moving. Its robust construction and precise dimensions translate to reliable results across batches and assemblies, supporting faster, more consistent outcomes for every M12 x 0.5 right-hand thread you manufacture or assemble.