The JBO Thread Plug Gauge is a precision Go/No-Go tool designed for metric fine threads. Specifically sized for M12 x 1 holes with a right-hand orientation and 4H tolerance, it lets you quickly verify threaded holes to ensure proper fit and function. Ideal for engineers, machinists, quality inspectors, assembly technicians, and dedicated hobbyists, this gauge streamlines threading checks on busy workshops and in calibration labs.

• Go/No-Go efficiency: Quickly determine whether a hole meets the exact M12 x 1 thread specification with simple pass/fail checks, dramatically reducing inspection time and guesswork.
• Metric fine-thread accuracy: Precisely engineered for metric fine threads with a right-hand orientation and 4H tolerance, delivering consistent, repeatable results across parts and setups.
• Durable, easy-to-handle construction: Hardened steel construction with a knurled body provides long-lasting wear resistance and a secure grip for reliable use in demanding environments.

Using this gauge helps you speed up quality control, cut downtime, and ensure reliable thread mating across assemblies. The clear Pass/Fail feedback supports quicker process adjustments, while the rugged design stands up to daily shop-floor use, keeping measurements accurate and your operations running smoothly.