The JBO Thread Ring Gauge (NoGo) - Metric Fine is a precision inspection tool designed to verify external thread diameters on components with metric fine threads.
It is ideal for engineers, machinists, quality teams, and workshop technicians who need a reliable go/no-go check for M58 x 2, right-hand threads in the 6h class.

• Quick, confident go/no-go checks: Quickly determine if a part meets the M58 x 2, right-hand thread specification in 6h, reducing inspection time and guesswork.
• Rugged hardened steel construction: Built to withstand daily shop wear, delivering long tool life and consistent measurements even in tough environments.
• User-friendly design for rapid identification: Clear markings and smooth handling make it easy to spot non-conforming parts, helping keep production moving.

Using this gauge helps streamline quality control, improve first-pass yields, and ensure reliable assembly fits across your production runs, reducing downtime and returns while maintaining precise threading standards.