The JBO Thread Plug Gauge is a precision Go/No-Go gauge designed for metric fine threads. It helps technicians, engineers, buyers, tradespeople, and hobbyists quickly verify threaded holes before assembly, ensuring parts fit together with confidence.

Engineered for M14 x 1 right-hand threads with 6G tolerance, this gauge provides reliable checks in tight tolerances. Its hardened steel construction delivers long-lasting performance and wear resistance in busy workshop environments.

• Go/No-Go quick hole checks: Quickly determine pass/fail to speed up setups, reduce guesswork, and keep production moving.
• Hardened steel durability: Built to withstand daily use and maintain accuracy over time, even in demanding shop conditions.
• Metric fine-thread compatibility (M14 x 1, right-hand, 6G): Precisely matches common metric fine threads, helping confirm mating threads and minimize rework.

With the JBO Thread Plug Gauge in your toolkit, you gain fast, repeatable thread verification that speeds up assembly, reduces downtime, and supports consistent, high-quality results across every project.