JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6h - M20 x 1 Hex Key Drill Chuck With a precision-ground shank and

With a precision-ground shank and a strong clamping mechanism

35 coarse threads

its HSS-E 8% cobalt composition delivers durability

enhancing stability during heavy cuts and plunging moves

this NoGo gauge checks M48 x 1

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6h - M20 x 1 Hex Key Drill Chuck With a precision-ground shank andThe JBO Thread Ring Gauge (GO) Metric Fine, Right Hand, 6h, M20 x 1 is a precision tool designed to verify external thread diameters on fasteners and turned parts. It helps manufacturers, machinists, and inspectors quickly confirm that components meet the defined metric fine thread standard. Crafted from hardened steel for lasting durability, this GO gauge resists wear in busy workshop environments. Its straightforward design makes it easy to identify