JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M8 x 1 Face Mill Arbors the reamer is produced after

the reamer is produced after your order is placed

The cobalt-rich HSS‑E composition supports extended tool life in tougher workpieces

repeatable tool changes and minimized slip

ISO H5 tolerance on M2 HSS: Delivers precise bore size and consistent results across parts

reliable milling across a wide range of features and materials

JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M8 x 1 Face Mill Arbors the reamer is produced afterThe JBO Thread Ring Gauge (GO) is a precision tool designed to verify external metric threads. It is specified for M8 x 1, metric fine pitch, left hand threads, with a 6g tolerance class to ensure consistent acceptance testing. It enables quick, reliable Go checks to confirm parts meet exact diameter and pitch standards, helping maintain consistent fit across assemblies. Ideal for production, inspection, and QC teams in mechanical, automotive, and