JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M12 x 1 End Mill Holders designed to handle hard materials

designed to handle hard materials with clean

This is a manufactured-to-order item

and slotting while maintaining precise geometry

helping you confirm components meet spec at a glance

ISO H4 tolerance per DIN 8093: Ensures repeatable

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M12 x 1 End Mill Holders designed to handle hard materialsThe JBO Thread Ring Gauge (NoGo) Metric Fine Left Hand 6g M12 x 1 is a precision external thread gauge designed for fast, accurate verification of metric fine threads. Built for inspectors, machinists, and quality teams, it helps confirm that each threaded part meets exact diameter tolerances for M12 x 1 left hand threads. Constructed from hardened steel with a durable knurled edge, it withstands busy inspection benches and repeated use, delivering