The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. It’s ideal for engineers, machinists, and quality inspectors who need fast, reliable hole-thread verification. With a Go/No-Go design, you can quickly confirm whether a hole will accept the mating part at the correct tolerance, reducing guesswork and rework.

Crafted for durability, this gauge features hardened steel construction and a right-hand thread configuration sized for M16 x 1.5 (6G). It's built to withstand regular workshop use while maintaining accuracy across many inspections.

• Go/No-Go design for fast, confidence-checked threading: Quickly verify hole tolerance so assemblies fit correctly the first time, cutting inspection time and rework.
• Hardened steel construction for long life: Withstands daily use in busy workshops while preserving accuracy and repeatability.
• Specifically sized for M16 x 1.5 right-hand metric fine threads (6G): Ensures you’re testing the correct thread form and orientation, delivering consistent results across parts.

Use the JBO Thread Plug Gauge to streamline quality checks, reduce downtime, and achieve reliable, repeatable threading measurements across your production or maintenance workflows.