Designed for metric fine-thread applications, the JBO Thread Plug Gauge provides fast, reliable Go/No-Go checks of threaded holes. This tool is ideal for machinists, quality inspectors, and assembly teams who need quick confirmation that holes will accept fasteners with the correct fit.

• Go/No-Go quick verification: Instantly confirms whether a hole meets the required size, speeding inspections and reducing guesswork.
• Metric fine thread compatibility (M26 x 1.5, 4H): Designed for metric fine-thread holes, ensuring accurate sizing and repeatable checks for critical assemblies.
• Durable hardened steel construction: Built to withstand daily workshop use, resisting wear and deformation to deliver long service life and consistent measurements.

With the JBO Thread Plug Gauge, you gain a dependable inspection partner that helps you cut rework, improve throughput, and ensure reliable fit between components. The Go/No-Go design makes it easy to spot out-of-tolerance holes at a glance, while the precise M26 x 1.5, 4H sizing delivers repeatable results across multiple gauges and operators. Rugged and accurate, this gauge stays reliable even in busy production environments, giving you confidence to move from inspection to assembly with certainty.