JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M39 x 2 FHH helping you achieve cleaner slots

helping you achieve cleaner slots and smoother surfaces in limited-height setups

62 mm diameter for reliable

The M2 high-speed steel construction delivers wear resistance for longer tool life in demanding materials

Tapered Neck for Greater Stability: The tapered effective length increases rigidity and reduces tool deflection

This reamer helps you achieve precise hole sizes with clean finishes across a range of metals

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M39 x 2 FHH helping you achieve cleaner slotsThe JBO Thread Plug Gauge is a precision tool designed for inspecting metric fine thread holes. Its ideal for machinists, quality inspectors, engineers, and workshop technicians who need quick, reliable thread checks to ensure parts fit together smoothly. Built for M39 x 2 right hand threads with a 6H tolerance, the Go No Go design lets you determine at a glance whether a threaded hole is within specification, helping you avoid assembly surprises. Go