The JBO Thread Plug Gauge is a precision tool designed specifically for metric fine threads, focusing on M30 x 2 with a right-hand orientation. It’s ideal for machinists, quality inspectors, and assembly professionals who need fast, reliable verification of threaded holes to ensure flawless mating of components.

Crafted from hardened steel for lasting wear resistance, this gauge delivers repeatable Go/No-Go checks that quickly confirm holes meet the 4H tolerance. The knurled body provides a secure grip for accurate alignment, and its compact, tool‑ready size fits neatly in a toolbox or pocket for on‑site use.

• Go/No-Go quick verification: Instantly assess whether a hole is within tolerance by performing simple go and no-go checks, reducing inspection time and rework.
• Hardened steel construction: With durable, wear‑resistant steel, it maintains accuracy over thousands of uses and withstands busy workshop conditions.
• Ergonomic, knurled grip with right-hand M30 x 2 compatibility: Easy handling in tight spaces ensures precise alignment and correct use with standard metric fine-thread holes.

Use this gauge to speed up quality checks, prevent assembly delays, and improve overall precision in your machining or assembly workflow. It helps technicians deliver consistent results with confidence, whether you're setting up new parts or inspecting in-process components.