The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external thread diameters on mating components. This metric fine gauge is specified for left-hand threads (M18 x 0.75) in 6g tolerance, helping engineers, machinists, and quality teams quickly confirm threads meet specification.

• Durable, hardened steel construction: Built to withstand daily use in harsh shop environments, delivering long service life and stable measurements.
• Easy NoGo-style LH thread inspection: Enables fast identification of out-of-tolerance or non-conforming threads, reducing rework and speeding up QC checks.
• Precise metric fine LH thread specification (M18 x 0.75, 6g): Ensures accurate diameter checks for left-hand fasteners and compatibility with standard fine-pitch threads.

Using this gauge streamlines quality control, improves measurement consistency, and supports confident decisions in manufacturing and maintenance environments. Its hardened steel construction and precise LH thread specification help you deliver reliable assemblies and reduce downtime due to thread rework.