JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M56 x 2 Boring Bar Blank Through coolant: Flushed chips and

Through coolant: Flushed chips and improved cooling extend tool life while delivering smoother bore surfaces and better finish quality

this reamer maintains sharpness longer under heat and friction

Built to DIN 212-B style tolerances with ISO H5 size control

It complies with DIN 8093 and carries a tolerance of D = ISO H4

reliable go/no-go assessment to confirm that your threaded parts meet exact size and tolerance requirements

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M56 x 2 Boring Bar Blank Through coolant: Flushed chips andThe JBO Thread Ring Gauge (NoGo) Metric Fine, Left Hand, 6g, M56 x 2 is a precision inspection tool designed to verify external thread dimensions quickly and reliably. Its ideal for quality control teams, machine shops, maintenance crews, and anyone working with metric fine thread fasteners who needs fast, clear pass fail results. Made from hardened steel for durability in busy environments, this NoGo gauge helps you identify non conforming threads at