The JBO Thread Ring Gauge (GO) – Metric Fine – Right Hand – 4h – M58 x 1.5 is a precision tool designed to verify external threads on fasteners and machined components. Used in quality control, production, and maintenance, it provides a quick, reliable go/no-go check to confirm the thread size and pitch meet the M58 x 1.5 metric fine standard.

Machined from hardened steel for enduring wear resistance, this GO gauge is built for busy workshops. Its right-hand orientation matches common components, and the 4h tolerance ensures consistent measurements across inspections. The intuitive design makes it easy for inspectors and machinists to identify conforming parts at a glance.

• Exact GO size: M58 x 1.5, Metric Fine: Provides a definitive go/no-go check for external threads at the specified size and pitch, enabling fast, objective pass/fail decisions during receiving inspections or in-process checks.
• Hardened steel construction: Delivers durable wear resistance and long tool life, staying accurate through repeated use in demanding environments.
• User-friendly inspection design: Easy to read and quick to interpret results, helping inspectors and machinists identify conforming threads with confidence and speed.

This GO gauge helps you streamline quality control, reduce rework, and improve consistency across parts and batches. By delivering fast, reliable checks for M58 x 1.5 metric fine threads, it supports better throughput, safer assemblies, and more predictable machining outcomes—especially in high-volume production, maintenance, and service environments.