The JBO Thread Plug Gauge (GO) – Metric Fine, Left Hand, 6H for M70 x 1.5 is a precision inspection tool designed to verify internal threads quickly and reliably. Specifically suited for left-hand threaded holes, it helps engineers, machinists, and quality teams confirm that a hole will accept a screw of the correct size, ensuring proper fit and performance across components and assemblies.

Made from hardened steel and finished for durability, this GO gauge maintains its precise dimensions through heavy use in busy workshops. Its robust construction resists wear, helping you avoid recalibration or early replacement while supporting consistent, quality-controlled results over time.

• Exact metric size and 6H tolerance: Delivers reliable GO checks for M70 x 1.5 internal threads, enabling quick confirmation that holes meet the specified size on every inspection.
• Hardened steel durability: Built to withstand demanding environments, delivering long tool life and reduced downtime due to wear or damage.
• Left-hand thread compatibility with fast go/no-go checks: Designed for left-hand threaded holes, providing clear, effortless identification of acceptable holes and speeding up quality control on the shop floor.

Used in machine shops, assembly lines, and quality laboratories, this plug gauge helps streamline inspections, cut downtime, and improve consistency across parts. By delivering dependable, repeatable results, it supports precise engineering, safer assemblies, and on-time production without the guesswork.