JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M19 x 1 G and similar materials

and similar materials

Left-Hand Spiral Flute with Right-Hand Cutting: Optimizes chip evacuation and delivers a smooth bore finish with consistent size control

it delivers clean contours and reliable performance across demanding milling tasks

delivering consistent dimensions and superior surface finish

providing consistently accurate measurements in demanding shop environments

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M19 x 1 G and similar materialsThe JBO Thread Plug Gauge is a left hand, metric fine thread Go No Go gauge designed to verify internal threads with speed and precision. Sized for M19 x 1 holes in the 6H class, it helps ensure mating parts fit accurately without guesswork in critical assemblies. Built for daily workshop use, this gauge features hardened steel construction and a textured grip, delivering long lasting performance and confident handling during inspections. Go No Go