The JBO Thread Plug Gauge (NoGo) – Metric Fine, Right Hand, 6H, M138 x 2 is a precision inspection tool designed for engineers, machinists, quality teams, and workshop staff who work with metric-fine holes. It provides a fast, reliable way to verify internal threads meet exact specifications, helping you confirm component readiness without guesswork.

Designed for durability and repeatable results, it features hardened steel construction and a knurled body for secure handling. The distinctive red tolerance band offers a quick visual cue, and the compact form fits into tight workspaces for easier in-process checks.

• NoGo Verification for Metric Fine Threads (Right-Hand, M138 x 2, 6H): Calibrated to the exact No-Go limit for metric-fine holes, it provides a clear pass/fail result that speeds inspections and reduces guesswork in production, assembly, and QA workflows.
• Hardened Steel Construction: Built to endure busy shop environments, the gauge resists wear, maintains accuracy, and delivers long service life even after repeated use.
• Ergonomic Knurled Body with Red Tolerance Band: The textured grip and visual cue on the band make handling comfortable and measurements repeatable in tight spaces.

By adopting the JBO Metric Fine NoGo plug gauge, you streamline threaded-hole inspection, reduce rework, and improve overall part quality. It supports faster, more repeatable measurements and helps your team maintain tight tolerances across demanding applications.