The JBO Thread Ring Gauge GO Metric Coarse is a GO gauge designed to verify external threads on metric coarse fasteners. Precisely sized for a left-hand M14 x 2 thread, it helps quality teams, engineers, machinists, and workshop staff quickly confirm parts meet required tolerances without guesswork.

Made from hardened steel, it withstands daily use in busy shop environments while maintaining consistent, accurate measurements. Its GO design focuses on confirming minimum material presence and proper fit, ensuring measurements align with industry standards for reliable inspections and repeatable quality control.

• Precise GO verification for metric coarse threads: Quickly confirm that external threads match the M14 x 2 coarse spec and left-hand orientation, reducing test time and ensuring parts pass first inspection.
• Hardened steel construction for durability: Built to withstand daily wear in busy QC environments, resisting deformation and maintaining accuracy over many inspections.
• Left-hand compatibility with 6g tolerance: Specifically designed for left-hand coarse thread applications with a 6g tolerance, ensuring correct fit and reliable consistency across batches.

Using this gauge helps streamline quality workflows, minimize rework, and deliver consistent thread validation across parts. The robust construction supports long service life, while the precise GO measurement provides clear, actionable pass/fail results, enabling confident, standards-compliant assemblies.