The JBO Thread Plug Gauge is a precision inspection tool tailored for metric fine threads. Specifically configured for M28 x 1, 6G, right-hand threads, it helps technicians quickly verify threaded holes meet exact specifications during machining, assembly, or quality control.

Its Go/No-Go design supports fast, one-step checks in busy workshops, while the hardened steel construction delivers long-lasting performance and wear resistance in demanding environments.

• Metric fine-thread compatibility: Precisely designed for M28 x 1 fine threads, enabling straightforward, in-spec verification of threaded holes and reducing guesswork during assembly.
• Go/No-Go quick inspection: Dual-end design lets you perform Go and No-Go checks at a glance—Go should insert cleanly, No-Go should not pass—delivering fast, reliable pass/fail results.
• Durable hardened steel construction: Built to withstand daily workshop use with excellent wear resistance, ensuring consistent performance and a long service life.

Use this gauge to streamline quality checks, minimize rework, and ensure consistent thread fit across assemblies. Whether in professional manufacturing, machine shops, or serious DIY projects, the JBO Thread Plug Gauge provides dependable, repeatable results you can trust for every M28 x 1 threaded hole.