The JBO Thread Ring Gauge (NoGo) – Metric Fine, Right Hand, 6g, M21 x 1.5 is a precision inspection tool designed to verify external thread diameters against the NoGo limit. It’s ideal for inspectors, machinists, and quality teams across manufacturing, assembly, and maintenance environments, helping you quickly confirm that M21 x 1.5 fine-pitch components meet the required standard.

Crafted from hardened steel, this gauge delivers durability and dimensional stability even in busy workshops. Its meticulously calibrated dimensions support repeatable, reliable results, helping you maintain consistent quality across production runs and audits.

• Precise NoGo limit for Metric Fine M21 x 1.5 (6g): Enables quick pass/fail verification of external thread diameters, reducing guesswork and rework in inspection workflows.
• Hardened steel construction: Withstands daily use in demanding environments while preserving accuracy and longevity over many cycles.
• Right-hand orientation for standard parts: Designed to fit common right-hand threaded components and fixtures, speeding setup and minimizing inspection errors.

Integrating this gauge into your quality control process delivers faster, more consistent inspections, clear documentation of conformance, and reduced downtime from out-of-spec parts—empowering precise engineering, reliable manufacturing, and confident procurement decisions.