The JBO Thread Plug Gauge (Go/No-Go) is a precise inspection tool designed for NPT threaded pipe connections. Whether you’re in plumbing, oil and gas, or manufacturing, this Go/No-Go gauge helps you quickly verify that fittings meet required thread standards, ensuring proper fit and reliable sealing.

Built for durability and consistent performance, the gauge uses hardened steel construction with a right-hand orientation that aligns with standard piping practices. Its knurled body provides a secure grip, making accurate placement and measurement straightforward even in tight spaces.

• Go/No-Go verification: Quickly determine if the 1/16 x 27 NPT thread conforms to tolerance, enabling fast pass/fail decisions and minimizing rework.
• Precisely sized for reliable fit: Precisely matched to 1/16 x 27 NPT specifications to confirm proper seal and joint integrity during installation.
• Durable, grip-friendly construction: Hardened steel with a knurled surface and a right-hand design withstands daily shop use and resists wear.

This gauge streamlines your inspection workflow by delivering clear, repeatable results for every threaded connection. With its robust build and accurate dimensions, you’ll reduce troubleshooting time, improve consistency across projects, and gain confidence that fittings will perform as intended in the field.