JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M13 x 1 FMH FLH FHH S&E A&NF M&D delivering consistent finishes on hard

delivering consistent finishes on hard materials while reducing tool deflection

04 mm is an intermediate precision carbide reamer designed to finish through-holes with tight dimensional control

reducing inspection time and downtime in quality workflows

55 mm hand finishing tool designed for machinists who demand accurate

Nominal diameter: 17

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M13 x 1 FMH FLH FHH S&E A&NF M&D delivering consistent finishes on hardThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, specifically calibrated for M13 x 1 left hand (LH) holes with a 6H tolerance. Its ideal for machinists, quality engineers, maintenance technicians, and assembly teams who need fast, reliable go no go checks to verify hole readiness and ensure proper mating of components. Fast Go No Go verification: Quickly confirms whether an M13 x 1 LH hole meets the 6H