Meet the JBO Thread Plug Gauge for metric fine threads. This right-hand Go/No-Go gauge is engineered for M15 x 1 holes with 4H tolerance, delivering fast, reliable checks for precision assemblies. It's ideal for engineers, machinists, quality control teams, and maintenance professionals who need confidence that threaded holes will accept components consistently.

Designed for everyday shop use, the gauge features a hardened steel body with a textured knurl and color-coded collars at each end for quick end identification. The compact, hand-held tool provides durable performance and easy handling, even in tight spaces or oily environments.

• Go/No-Go quick checks: The dual-thread ends allow instant assessment—Go end should thread into the hole and No-Go end should not—so you can approve or reject a hole in seconds and reduce guesswork.
• Metric fine-thread compatibility (M15 x 1, right-hand): Precisely matched to fine-pitch metric holes, delivering accurate, repeatable go/no-go results for critical assemblies.
• Rugged, user-friendly construction: Hardened steel provides long life and wear resistance; knurled grip and color-coded ends enable secure handling and fast orientation in busy work environments.

With the JBO Thread Plug Gauge, you gain fast, dependable hole validation that helps prevent misfits, reduces rework, and keeps production flowing. The tool's durable build stands up to daily shop use, while the intuitive Go/No-Go action makes inspections straightforward for both seasoned technicians and new operators.