The JBO Thread Ring Gauge (GO) — Metric Fine, Right Hand, M38 x 1.5 — is a precision tool used to verify external thread dimensions on fasteners and mating components. Designed for engineers, machinists, inspectors, and workshop technicians, it provides a quick, reliable go/no-go check to ensure parts conform to the M38 x 1.5 metric fine standard.

Crafted from hardened steel, this GO gauge offers exceptional durability and wear resistance for frequent use in demanding environments. The compact ring design is easy to handle, and its clear indication helps you identify compliant parts at a glance, accelerating quality control and assembly workflows.

• Accurate GO gauge for M38 x 1.5 metric fine threads: Quickly verify external thread diameter and pitch against the M38 x 1.5 standard, speeding up go/no-go inspections and reducing guesswork in assembly.
• Hardened steel construction for enduring reliability: Resists wear in busy workshops, maintaining precise measurements over many cycles and demanding environments.
• 6g tolerance class for consistent, repeatable checks: Provides reliable conformance verification across parts and batches, helping to standardize quality control and minimize rework.

With the JBO Thread Ring Gauge, you can streamline your quality checks, reduce inspection time, and ensure your threaded components meet exacting standards. The combination of precise metric fine threading, robust materials, and straightforward use supports faster workflows, reliable results, and greater confidence in every build or repair.