The JBO Thread Ring Gauge (NoGo) – Metric Fine, Right Hand, 6g, M138 x 2 is a precision tool designed to verify external thread diameters on fasteners, fittings, and machined components. Ideal for engineers, inspectors, machinists, and quality teams, it helps you quickly confirm whether parts meet the required thread size before assembly or repair.

Made from hardened steel for durability and wear resistance, this NoGo gauge delivers reliable, long-lasting performance in busy workshops and production lines. Its right-hand, metric-fine construction supports accurate checks, easy identification of undersized parts, and smooth integration into standard quality control workflows.

• Precision NoGo for Metric Fine M138 x 2: Quickly verifies external thread diameters and helps you identify undersized components at a glance, reducing misfits and rework.
• Hardened steel construction for durability: Built to withstand daily use in demanding environments, maintaining accuracy and extending tool life even after many inspections.
• User-friendly right-hand design for fast inspections: Intuitive handling and clear orientation speed up checks, minimize setup time, and improve consistency across operators.

By using this gauge, you ensure consistent, reliable inspections of external threads, shorten inspection cycles, reduce scrap and rework, and improve overall quality in threaded assemblies. The durable build and straightforward use support repeatable results across shifts, making it a dependable addition to any quality control or manufacturing workflow.