JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M40 x 1 FMH Variable index geometry: Reduces vibration

Variable index geometry: Reduces vibration and improves chip control for smoother cuts

The robust HSS‑E material

DIN 212-B compliance and Toolex’s engineering standards provide reliability across demanding machining environments

5 mm diameter with a 20 mm length

5-Micron Run-Out Accuracy: Delivers true concentricity across passes

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M40 x 1 FMH Variable index geometry: Reduces vibrationThe JBO Thread Ring Gauge (GO) Metric Fine is a precision inspection tool for external threads. Its designed for manufacturers, machinists, quality teams, and maintenance technicians who need fast, reliable verification of M40 x 1 right hand threads. Calibrated to the 6g external thread tolerance, this gauge helps confirm parts meet the exact GO limit, supporting consistent assembly and reduced rework. Built from hardened steel, it stands up to daily