The JBO Thread Ring Gauge (NoGo) — Metric Fine, Right Hand, 6h, M42 x 2 — is a precision inspection tool designed to verify external thread diameters on fasteners, shafts, and threaded components. It’s ideal for engineers, machinists, quality inspectors, and hobbyists who need quick, reliable checks to confirm parts meet exact M42 x 2 specifications and tolerance.

Manufactured from hardened steel for lasting durability, this NoGo gauge resists wear in demanding workshop environments. The metric fine pitch ensures smooth engagement with threads, making it easy to detect non-conforming parts during routine quality control and final assembly checks.

• Hardened steel construction: Built to withstand frequent use in busy shops, delivering long-lasting accuracy and excellent wear resistance.
• Precise Metric Fine NoGo interface: Engineered for reliable, repeatable checks of M42 x 2 external threads, helping you quickly distinguish in-tolerance parts from out-of-tolerance ones.
• Right-hand orientation with 6h tolerance: Aligns with standard right-handed threads and the 6h tolerance class to ensure consistent, repeatable inspection results.

Using the JBO Thread Ring Gauge (NoGo) streamlines quality control, reduces inspection time, and improves consistency across batches. Its rugged construction and precise design provide confidence that threaded components meet the required standards, supporting smoother workflows from incoming inspection to final assembly.