The JBO Thread Plug Gauge is a precision tool designed for quick, reliable verification of metric fine threaded holes. Perfect for machinists, inspectors, assembly teams, and shops where thread fit matters, it helps ensure that components mate smoothly and consistently.

Designed for right-hand M14 x 1.5 threads within a 4H tolerance, this gauge uses a clear Go/No-Go approach so you can make fast pass/fail decisions on the spot. Crafted from hardened steel, it resists wear and keeps its accuracy through repeated use in demanding environments.

• Go/No-Go inspection design: Quickly confirm whether a threaded hole meets the specified limit, reducing guesswork and enabling faster, more reliable assemblies.
• Metric fine thread compatibility (M14 x 1.5, 4H): Precisely tailored for metric fine threads, ensuring accurate checks for critical fits in precision applications.
• Durable hardened steel, right-hand orientation: Built to endure daily shop use with a design that aligns with standard right-hand threading for dependable, repeatable results.

This gauge supports efficient quality control and assembly workflows by delivering consistent measurements, minimizing downtime, and helping teams avoid misfits. Its robust construction and precise thread specification give buyers and technicians the confidence to rely on it for routine inspections and critical fits alike.