The JBO Thread Plug Gauge is a precision tool for metric coarse threads, designed to help engineers, machinists, inspectors, and technicians quickly verify threaded holes for proper fit and function. Its go/no-go design lets you confirm whether a hole is within tolerance in seconds, keeping assemblies moving smoothly.

This right-hand gauge covers M1 x 0.25 coarse threads with a 5H tolerance and is crafted from hardened steel to withstand daily use in busy workshops, providing reliable performance and long life.

• Go/No-Go Verification for Quick, Confident Checks: The dual ends allow immediate assessment of both minimum and maximum thread limits, reducing inspection time and rework.
• Hardened Steel Construction for Durability: Built to endure repeated use in demanding environments while maintaining accurate, repeatable measurements.
• Right-Hand M1 x 0.25 Coarse Thread (5H): Optimized for common metric coarse threads, delivering consistent GO/NO-GO results and compatibility across standard applications.

This plug gauge streamlines quality control by providing fast, reliable checks that help ensure components thread correctly the first time. By enabling precise GO/NO-GO verification, it reduces downtime, minimizes guesswork, and supports consistent production yields across assemblies that use metric coarse threads.