The JBO Thread Plug Gauge (NoGo) - Metric Fine is a precision measuring tool designed specifically for metric fine threads. It enables quick, reliable go/no-go checks to confirm that internal threaded holes meet the required size and tolerance. Ideal for engineers, machinists, quality inspectors, and maintenance professionals, this gauge streamlines threaded-hole verification across manufacturing, assembly, and service tasks.

Crafted as a right-hand, 6H gauge for M68 x 4 threads, it is built from hardened steel to withstand daily use in demanding environments. The knurled body provides a secure grip and smooth maneuvering during inspection, reducing handling errors and downtime.

• Metric Fine NoGo Precision: Designed for metric fine threads, this NoGo gauge lets you quickly verify hole suitability and reject out-of-tolerance parts at a glance, shortening inspection cycles.
• Hardened Steel Durability: Built to endure repeated insertions and wear, ensuring long service life in busy workshops and QC labs.
• Ergonomic Right-Hand Design: The knurled body and right-hand thread orientation deliver secure handling and precise alignment, improving accuracy and reducing fatigue during routine checks.

This gauge enables fast, confident decisions during inspection, minimizes downtime, and supports consistent product quality. With its durable construction and precise 6H/M68 x 4 specifications, you can rely on repeatable measurements across shifts, projects, and maintenance tasks, giving you confidence when approving or rejecting parts.