The JBO Thread Ring Gauge (NoGo) – Metric Fine, Right Hand, 6h, M38 x 1 is a precision inspection tool designed to verify external thread diameters quickly and reliably. Ideal for machinists, inspectors, engineers, and shop staff, it helps confirm components meet exact threading specifications during quality control and production workflows.

Constructed from hardened steel for robust wear resistance, this NoGo gauge stands up to daily use in demanding environments. A knurled outer edge provides a secure grip, while a red indicator mark aids quick orientation during inspections, helping you read the gauge accurately at a glance.

• NoGo verification for M38 x 1 threads: enables fast, unambiguous checks to ensure external thread diameters do not exceed the maximum specification, reducing the risk of out‑of‑tolerance parts entering assembly.
• Hardened steel construction: delivers long-lasting durability and wear resistance, maintaining measurement accuracy through thousands of inspections in busy workshops.
• Ergonomic, user‑friendly design: features a knurled edge for a secure grip and clear markings for quick, confident readings, minimizing reading errors and speeding up QC tasks.

With the JBO Thread Ring Gauge, you gain a reliable, fast method to verify metric fine external threads at the 6h tolerance class for M38 x 1. This supports consistent quality across batches, reduces rework, and keeps production moving. Whether in a precision workshop or on a busy assembly line, this gauge delivers repeatable results and straightforward use every time.