The JBO Thread Plug Gauge is a precision inspection tool designed specifically for metric coarse threads. It provides quick, reliable go/no-go checks for threaded holes sized M33 x 3.5, with a right-hand configuration and 6G tolerance to ensure standardization across parts and assemblies.

Manufactured for durability, this gauge is built from hardened steel to withstand busy shop environments and deliver long-lasting performance in quality control, machining, and assembly workflows.

• Go/No-Go design for fast, reliable checks: Quickly confirm whether a hole accepts or rejects the M33 x 3.5 coarse thread, reducing inspection time and rework.
• Hardened steel construction for lasting durability: Resists wear and deformation in demanding use, helping maintain accurate checks over many cycles.
• Right-hand orientation and 6G compatibility: Precisely tailored for metric coarse threads with right-hand threading, ensuring consistent plug gauge performance and fit across parts.

Using the JBO Thread Plug Gauge supports faster quality control, minimizes downtime, and helps ensure consistent thread fit across production runs. It provides a dependable, easy-to-use check that contributes to higher first-pass yields and reliable component interchangeability.