JBO Thread Plug Gauge (NoGo) - Metric Fine - Left Hand - 6H - M45 x 3 End Mill Holders and fabricators who need repeatable

and fabricators who need repeatable bore sizes with clean

Through coolant and ISO H4 tolerance (DIN 8093): Through‑coolant design keeps the cutting edge cool and clear

improving workflow and project timelines

With its defined lead time and precise geometry

JBO Thread Plug Gauge (NoGo) - Metric Fine - Left Hand - 6H - M45 x 3 End Mill Holders and fabricators who need repeatableThe JBO Thread Plug Gauge (NoGo) Metric Fine is a precise inspection tool designed to verify internal metric fine threads. Built for lefthand M45 x 3 holes with a 6H tolerance, it helps machinists, inspectors, and maintenance professionals quickly confirm that threaded holes meet exact specifications before components are assembled or shipped. Accurate NoGo verification for metric fine threads: enables quick pass fail checks for holes at the 6H