The JBO Thread Ring Gauge (GO) - Metric Coarse - Right Hand - 4h - M30 x 3.5 is a precision inspection tool designed to quickly verify external threads on metric coarse components. It helps engineers, inspectors, and shop floor teams confirm that parts will mate reliably with standard M30 x 3.5 fasteners.

Made from hardened steel for lasting durability, this GO gauge resists wear in demanding environments. The knurled outer ring provides a secure grip for repeatable checks, while the precise bore supports accurate go/no-go measurements at a glance.

• Precision GO gauge for M30 x 3.5 (4H): Enables quick, consistent go/no-go checks of external threads, reducing guesswork and speeding up inspection decisions.
• Hardened steel construction: Delivers long wear life and maintains accuracy through daily use, even after repeated insertions and withdrawals.
• Ergonomic knurled grip: Improves handling and alignment, allowing fast, reliable checks—even when wearing gloves.

This GO thread ring gauge supports streamlined quality control by delivering reliable, repeatable measurements that confirm thread engagement and proper mating. By eliminating uncertainty in fits, it helps reduce rework and downtime while improving overall consistency and accuracy across production runs and maintenance tasks.