JBO Thread Plug Gauge (NoGo) - Metric Coarse - Left Hand - 6H - M45 x 4.5 S&E secure fit and minimal runout

secure fit and minimal runout when paired with standard tooling

Application: Suitable for slot milling in steel

controlled reaming and effective chip removal

precise rib cuts with smooth chip flow and minimal tool deflection during narrow-rib machining

With its straight shank for easy clamping in common tooling setups

JBO Thread Plug Gauge (NoGo) - Metric Coarse - Left Hand - 6H - M45 x 4.5 S&E secure fit and minimal runoutThe JBO Thread Plug Gauge (NoGo) Metric Coarse, Left Hand, 6H, M45 x 4. 5 is a precision inspection tool designed to quickly verify the size of internal threaded holes. Built for quality control, machining, assembly, and maintenance teams, it helps ensure threaded connections will meet spec and function reliably in real world applications. Crafted from hardened steel for durability and long life, this NoGo gauge is built to withstand daily shop