The JBO Thread Ring Gauge (GO) is a precision tool designed to quickly verify external metric threads. Built for quality control teams, machinists, inspectors, and maintenance technicians, it provides a reliable go-side test to confirm that thread diameters and forms meet defined standards for metric fine threads.

Engineered for durability, this gauge targets M2.5 x 0.3 with a right-hand thread and 6g tolerance. Crafted from hardened steel, it resists wear in busy workshops and remains accurate through repeated use, cleaning, and handling. Its simple, intuitive design makes it easy to identify properly conformed threads at a glance.

• Metric Fine GO Gauge for M2.5 x 0.3 (6g): Delivers fast, repeatable go checks for the external metric fine thread M2.5 x 0.3 within the 6g tolerance, helping you quickly determine whether a part meets spec.
• Hardened Steel Construction: Built to withstand daily handling and repeated use, offering long-lasting wear resistance and stable, repeatable measurements over time.
• Right-Hand Thread Orientation: Ensures testing aligns with the most common right-hand threaded parts, reducing setup time and minimizing inspection errors in busy workshops.

With precise Go-side testing and durable construction, this gauge helps you speed up inspections, reduce rework, and ensure consistent thread quality across parts and assemblies. It fits into standard QC workflows, supports reliable pass/fail decisions, and gives your team confidence that every M2.5 x 0.3 thread meets the required standard.