The JBO Thread Ring Gauge (GO) – Metric Coarse is a precision inspection tool designed to verify external metric threads. It’s ideal for engineers, buyers, technicians, and quality-control professionals who need fast, reliable checks to confirm parts meet exact thread specifications.

Designed for M3.5 x 0.6 metric coarse threads with a right-hand orientation, the gauge features hardened steel construction for long life and wear resistance in busy workshop environments. Its straightforward, dependable design enables quick, repeatable measurements with minimal setup, helping you maintain consistent quality across production runs.

• Hardened steel construction: Built to withstand daily use in busy shops, delivering durable, long-lasting performance that holds its accuracy over time.
• Precise metric coarse GO gauge for M3.5 x 0.6 threads: Enables fast, accurate verification of external threads, reducing guesswork and rework in inspection and assembly.
• Ergonomic knurled grip: The textured outer surface provides secure handling and easy alignment, even with gloves, to speed up measurements and improve repeatability.

This GO gauge streamlines quality control by delivering clear, pass/fail readings for external thread diameters, helping you accelerate inspections, cut downtime, and ensure reliable fits in every assembly. With its durable materials and simple operation, you can trust it to deliver consistent results across departments and projects.