The JBO Thread Plug Gauge (GO) - Metric Fine - Left Hand - 6H - M50 x 1 is a precision inspection tool designed to verify internal threads in metal components. This GO gauge helps machinists, inspectors, and quality teams quickly determine whether threaded holes meet exact metric specifications, ensuring reliable assembly and reducing fitting surprises.

Crafted from hardened steel for lasting durability, the gauge features a knurled, easy-to-grip body and a left-hand orientation that simplifies checks on LH threads, supporting accurate and repeatable measurements in busy shops.

• Accurate metric fine pitch (M50 x 1 LH GO): Enables fast, pass/fail verification of hole size and thread pitch, speeding inspections and reducing rework.
• Hardened steel construction: Delivers long tool life and consistent performance in demanding environments, resisting wear over thousands of uses.
• User-friendly, left-hand design: The knurled body provides secure grip and intuitive orientation for quick checks, helping maintain workflow continuity and measurement reliability.

Using the JBO Thread Plug Gauge (GO) ensures your threaded holes conform to the M50 x 1 LH 6H standard, improving first-pass assembly, reducing downtime, and delivering consistent results across parts and batches. It combines durability with practical usability, giving teams a dependable tool for precise quality control and trustworthy manufacturing outcomes.