The JBO Thread Plug Gauge is a precision inspection tool designed to verify UNC right-hand internal threads in holes. Sized for 1-1/4 x 7 and classed to 2B, it’s ideal for machinists, inspectors, and production teams across manufacturing, automotive, and aerospace settings. Its dual-ended Go/No-Go design lets you confirm fit quickly and reliably, helping you spot non-conforming threads before assembly.

• Dual-Ended Go/No-Go Design: Quickly verify both go and no-go limits in a single check, reducing inspection time and avoiding misreads that lead to incorrect assemblies.
• 1-1/4 x 7 UNC Right-Hand, 2B Tolerance: Precisely sized to meet Unified Thread Standard and 2B internal thread class, ensuring reliable acceptance testing for threaded holes.
• Ergonomic, Durable Construction: Knurled grip and robust design provide secure handling, easy alignment in tight spaces, and long-term use in shop and inspection rooms.

When you need consistent, fast verification of threaded holes, the JBO Thread Plug Gauge delivers. Its clear go/no-go feedback speeds up quality checks, minimizes rework, and supports reliable mating with fasteners across batches. This gauge helps you maintain tighter process control, improve workflow efficiency, and stand up to daily use in demanding environments.