The JBO Thread Ring Gauge (GO) is a precision gauge designed to verify external metric threads with confidence. Specifically configured for metric fine threads, this GO gauge targets right-hand M3 x 0.25 threads in a 6h tolerance class, making it a dependable tool for machinists, inspectors, and quality teams across manufacturing, maintenance, and assembly environments. Use it during incoming inspection, in-process checks, or final QC to quickly confirm parts meet the required size and pitch.

Crafted from hardened steel, the gauge delivers durability that stands up to daily use in demanding workspaces. Its precise construction and finish help ensure repeatable results, reducing the need for re-measurement and rework. Clear identification of passing components supports streamlined quality control workflows and traceability across jobs.

• Durable hardened steel construction: Built to resist wear and maintain accuracy through heavy use, delivering long-lasting performance in busy shops.
• Precise metric fine threading (M3 x 0.25, 6h, right-hand): Enables accurate GO checks for external threads, helping you quickly confirm parts meet exact size and pitch specifications on the first try.
• User‑friendly GO inspection design: Facilitates fast, straightforward acceptance checks with clear feedback, reducing inspection time and minimizing guesswork in QC.

Using the JBO Thread Ring Gauge (GO) helps ensure external thread components conform to the M3 x 0.25 6h standard, supporting accurate measurements, consistent quality, and efficient workflows. It’s a reliable addition to any shop floor QC toolkit, designed to provide dependable results that you can trust for everyday manufacturing and maintenance tasks.