The JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M39 x 1.5 is a precise external thread gauge designed to verify metric fine threads with quick, reliable Go/NoGo checks. It’s ideal for machinists, quality inspectors, and maintenance teams who need fast confirmation that threaded parts meet exact size and tolerance requirements.

Crafted from hardened steel, this gauge is built for durability in busy workshops. The user-friendly NoGo design makes it easy to identify non-conforming components at a glance, helping you keep production moving and quality consistent.

• Rugged, wear‑resistant construction: Hardened steel resists wear and deformation, maintaining accurate measurements through thousands of uses and across demanding environments.
• Fast, visual Go/NoGo checks: Clear, straightforward checks let you quickly confirm fit or reject parts that exceed tolerance, reducing inspection time and downtime.
• Metric fine threading ready (M39 x 1.5, 6g, right‑hand): Precisely matched dimensions ensure reliable conformance checks with common metric components, supporting consistent quality across batches.

Using the gauge streamlines your inspection workflow by providing immediate pass/fail results, reducing guesswork, and minimizing rework. Its durable construction and exact dimensions give you confidence in every measurement, whether you’re setting up machinery, performing in-process QA, or conducting incoming inspections.