The JBO Thread Ring Gauge (NoGo) is a precision external-thread gauge designed for metric coarse threads. Specifically tuned for right-hand M7 x 1 threads, it helps quality teams, engineers, machine shops, and hobbyists quickly verify that parts meet exact size and tolerance requirements.

With its NoGo design, inspectors can instantly identify components that exceed the permissible limits, supporting consistent quality without guesswork.

• Fast NoGo verification: One simple pass confirms the external thread diameter is within the specified NoGo limit, speeding inspections and reducing rework.
• Rugged hardened steel construction: Built to withstand daily use in busy workshops, resisting wear, corrosion, and impact for long service life.
• Metric coarse M7 x 1 right-hand tolerance (6e) calibration: Precisely matched to the M7 x 1 coarse thread with 6e class, delivering reliable fit checks and repeatable results across batches.

In practice, this gauge streamlines threading inspections, improves consistency across parts, and reduces downtime by accelerating go/no-go decisions. Its durable construction and precise calibration give you confidence in every measurement, helping you achieve reliable assemblies and maintain quality standards across production runs.