The JBO Thread Ring Gauge (NoGo) — Metric Fine, Left Hand, 6g, M17 x 0.75 — is a precise external thread gauge designed for quick, reliable inspections of threaded components. Ideal for engineers, machinists, quality teams, and maintenance staff, it provides a clear, fast check to confirm parts meet metric fine thread specifications.

Constructed from hardened steel, this gauge resists wear in busy workshop environments and maintains accurate measurements across many cycles. The left-hand, metric fine configuration supports accurate gauging of components with this thread form, helping you catch non-conforming parts early and keep production flowing.

• NoGo Precision for Quick Conformance: Instantly identifies non-conforming threads by providing a clear pass/fail signal for whether external threads fall within the specified tolerance, reducing inspection time and rework.
• Durable Hardened Steel Construction: Built to withstand daily shop use, resisting wear and preserving measurement accuracy for long service life.
• Metric Fine Left-Hand Fit, M17 x 0.75, 6g: Precisely sized for the intended thread form, including left-hand applications, with a 6g tolerance class to deliver repeatable, trusted gauging results.

Using the JBO Thread Ring Gauge (NoGo) helps you streamline quality checks, speed up incoming and in-process inspections, and reduce rework by catching non-conforming parts early. Its durable build and precise sizing deliver consistent results across tools, operators, and shifts, boosting confidence that every threaded component meets your standards. Whether you’re in manufacturing, maintenance, or repair, this gauge supports reliable, repeatable measurements and smoother workflows.