The JBO Thread Plug Gauge (Go/NoGo) for NPT, Right Hand, Model 4 x 8, is a precision inspection tool designed for plumbers, manufacturers, and field technicians who rely on accurate pipe connections. Built for right-hand NPT threads, it helps verify that fittings meet required standards and will seal properly in service. The knurled, metal body provides a secure grip for precise placement, even in oily or wet conditions.

• Go/NoGo design for quick conformance checks: Instantly distinguish between conforming and non-conforming threads, reducing guesswork and ensuring proper fit and sealing on first assembly.
• Hardened steel construction for durability: Built to withstand daily use in harsh workshop and field environments, delivering reliable performance over a long service life.
• Ergonomic knurled grip and right-hand alignment: Easy, secure handling with precise alignment to standard NPT fittings, improving accuracy and reducing hand fatigue during inspection.

This plug gauge helps you streamline quality control, accelerate assemblies, and deliver leak-free, reliable pipe connections across plumbing, oil and gas, and manufacturing applications.