The JBO Thread Plug Gauge (NoGo) - Metric Fine - Right Hand - 6H - M58 x 4 is a precision tool designed to verify metric fine threaded holes. It provides a clear go/no-go indication, helping machinists, inspectors, and fabricators confirm hole size quickly and reliably.

With a robust hardened steel body and a knurled grip, this NoGo gauge stands up to daily use in busy workshops while delivering repeatable, dependable results.

• Precise go/no-go verification for metric fine threads: Quickly determine whether a hole is within spec, reducing guesswork and rework.
• Durable hardened steel construction with secure grip: Built to withstand daily wear while the knurled surface ensures easy handling and long life in demanding environments.
• Exact size and compatibility for M58 x 4, right-hand 6H threads: Designed to match standard metric fine thread holes, delivering consistent pass/fail results across parts and assemblies.

This plug gauge helps streamline quality control, speed up hole inspection, and ensure consistent assembly fit across batch production. By providing reliable results in a single check, it minimizes downtime, reduces risk of costly rework, and supports efficient, precise manufacturing workflows.