The JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 4h - M18 x 1.5 is a precise inspection tool designed to verify external metric threads. It’s ideal for engineers, machinists, quality teams, buyers, and workshop hobbyists who need quick, reliable checks to ensure parts meet the M18 x 1.5 standard with metric fine pitch. With its GO designation, you can quickly determine whether a threaded component passes the size test during incoming inspection, in-process checks, or final assembly.

Constructed from hardened steel, the gauge offers durability and wear resistance for daily use in busy shops and production lines. Its straightforward, easy-to-read form helps operators of all experience levels perform accurate checks, reducing guesswork and enabling consistent results across parts and shifts.

• Go gauge for fast, reliable external-thread checks: Quickly verify whether parts with M18 x 1.5 threads meet the standard, speeding up inspection and reducing guesswork on fit.
• Metric fine, right-hand design (M18 x 1.5): Specifically tuned for metric fine threads on right-hand parts, ensuring your checks reflect the exact specification you're manufacturing or assembling.
• Hardened steel construction for durability: Built to resist wear in busy workshops, maintaining accuracy across thousands of inspections and delivering long service life.

This GO gauge supports tighter quality control, faster setup, and consistent results across production runs. By delivering a clear pass/fail indication for external threads, it helps reduce rework, minimize downtime, and protect the reliability of threaded assemblies in everything from precision machinery to everyday equipment.