JBO Thread Plug Gauge (NoGo) - Metric Coarse - Left Hand - 6H - M45 x 4.5 S&E precise rib cuts with smooth

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

The carbide tip stands up to tougher materials

secure fit and minimal runout when paired with standard tooling

while the taper-shank interface keeps tooling aligned for consistent performance across tasks

Application: Suitable for slot milling in steel

JBO Thread Plug Gauge (NoGo) - Metric Coarse - Left Hand - 6H - M45 x 4.5 S&E precise rib cuts with smoothThe 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