JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M70 x 4 Boring Bar Blank 3 mm to produce smooth

3 mm to produce smooth edges and reduce wear

this GO ring gauge delivers reliable

DIN 8089-compliant and built from HSS-E (M35 cobalt)

The through-coolant design and carbide stability extend tool life during longer runs

The uncoated finish supports reliable engagement with the workpiece and efficient chip evacuation

JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M70 x 4 Boring Bar Blank 3 mm to produce smoothThe JBO Thread Plug Gauge (GO) is a precision inspection tool designed to quickly verify threaded holes in machining, assembly, and quality control workflows. Sized for M70 x 4 metric fine threads with a 6H tolerance and right hand orientation, this GO gauge confirms holes meet the required fit and specification. Crafted from hardened steel, it resists wear and retains accuracy through repeated use in busy workshops. The tools knurled, easy to grip