JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M40 x 1 FMH ISO H5 tolerance: Keeps bore

ISO H5 tolerance: Keeps bore sizes tight (-0 to +0

Shank Type: Straight shank provides broad compatibility with most toolholding systems

it provides durable performance for production runs

helping you maintain sharpness and achieve consistent results on HRc70-grade materials

making it a practical addition to any VDI setup

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M40 x 1 FMH ISO H5 tolerance: Keeps boreThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, enabling quick Go No Go checks of threaded holes to confirm proper fit. This left handed version targets M40 x 1 threads with a 6H tolerance, helping you ensure correct engagement with left handed components. Built from hardened steel for long lasting wear resistance, it stands up to daily use in demanding workshop environments. Go No Go quick validation: