The JBO Thread Plug Gauge is a precision Go/No-Go tool designed for metric fine threads. It helps engineers, machinists, and technicians quickly verify that a threaded hole matches the intended M13 x 1 size with 6G tolerance. This Left Hand gauge is built from hardened steel for long-lasting wear and reliable performance in busy workshops.

• Go/No-Go quick validation: Instantly confirm whether a threaded hole meets spec, speeding up inspection and reducing guesswork during assembly.
• Durable hardened steel construction: Designed to withstand daily use in demanding environments, resisting wear for reliable measurements over time.
• Precise metric fine thread (M13 x 1, 6G): Ensures accurate checks for fine-pitch threads, helping you validate parts and maintain tight manufacturing tolerances with confidence.

With the JBO Thread Plug Gauge, you can streamline quality control, improve fit accuracy, and minimize rework. Its robust build and precise specification support faster setup, consistent results, and smoother workflow across production or repair tasks.