Designed for engineers, machinists, inspectors, and buyers, the JBO Thread Ring Gauge (GO) — Metric Coarse — Left Hand — 6g — M18 x 2.5 is a dedicated tool for quickly and reliably verifying external thread dimensions. Its precise GO dimension helps confirm whether a component's metric coarse threads meet specification, supporting fast, accurate quality checks in production or repair environments. Made from hardened steel for durability, it stands up to daily use and resists wear, ensuring long service life in busy workshops.

• Precise metric coarse GO gauge for M18 x 2.5 Left-Hand threads: Quickly verify external thread diameter and pitch to ensure components match specification, reducing inspection time and rework.
• Hardened steel construction for durability: Built to withstand daily use in busy workshops, resisting wear and maintaining accurate size checks over many cycles.
• 6g tolerance class for repeatable results: Delivers consistent measurements across multiple inspections, helping you trust every check and maintain process stability.

The JBO Thread Ring Gauge (GO) helps streamline quality control and precision assembly by providing fast, reliable checks of metric coarse external threads, including left-hand configurations like M18 x 2.5. Its rugged, wear-resistant body and tightly controlled dimensions support repeatable measurements, reducing downtime and ensuring components fit and function as intended in your applications.