The JBO Thread Ring Gauge (GO) – Metric Coarse, Right Hand, 6h, M30 x 3.5 is a precision Go gauge designed to verify external threads against exact metric standards. It helps engineers, inspectors, and machinists quickly validate that fasteners and threaded components will fit and function as intended. With its Go gauge format, you can confirm proper thread size and pitch in a single check, improving throughput in quality-control workflows.

Built from hardened steel for durability, this gauge delivers reliable measurements under daily shop conditions and maintains accuracy across repeated use. Its simple, user-friendly design supports fast, confident checks for metric coarse threads, aligning with industry standards for consistent, repeatable results.

• Go gauge for metric coarse threads: Quick Go/No-Go checks for M30 x 3.5 coarse threads (6h), speeding inspection and reducing guesswork.
• Hardened steel construction: Durable, wear-resistant material that resists scratches and maintains precision through frequent use.
• Ergonomic, user-friendly design: Knurled outer surface and straightforward handling enable secure grip and fast alignment, helping operators inspect more parts per shift.

This GO gauge provides a dependable, repeatable standard for thread verification, helping streamline QA processes, reduce rework, and ensure reliable fitment of metric coarse threaded connections across manufacturing, maintenance, and engineering applications.