The JBO Thread Plug Gauge is a dual-ended Go/No-Go tool designed for metric coarse threads. Specifically sized for M8 x 1.25, it enables quick, reliable inspection of internal threads to ensure proper fit and function in assemblies.

Built for tough workshop use, the gauge features a hardened steel body with a textured knurled grip. Its right-hand orientation and 4H tolerance are engineered to deliver consistent results across repeated checks, supporting durable, long-lasting performance in demanding environments.

• Dual-ended Go/No-Go design for fast thread verification: Quickly confirm both the minimum and maximum material conditions of M8 x 1.25 coarse threads in a single tool, speeding quality checks and reducing guesswork.
• Hardened steel construction with knurled grip: Withstands daily workshop use and provides a secure, slip-resistant hold for accurate measurements, even when wearing gloves.
• Specifically matched to metric coarse threads (M8 x 1.25, 4H, right-hand): Ensures consistent, repeatable checks aligned to industry standards for reliable hole quality across parts.

This plug gauge helps you streamline QA workflows by providing immediate pass/fail indications, reduces downtime from misfitted parts, and protects critical threaded components from improper assembly. With robust construction and a precise Go/No-Go function, you can trust it to deliver consistent performance across production environments and a long service life.