The JBO Thread Plug Gauge is a precision tool designed to verify internal threads against Unified standards. It helps machinists, inspectors, and assembly professionals quickly confirm that threaded holes will accept fasteners correctly and consistently across manufacturing, automotive, and aerospace environments.

Designed for reliability and ease of use, this right-hand, 2B class gauge features a dual-ended Go/No-Go design in the 1 1/16 x 16 size. The compact, durable construction is built for shop floors and inspection benches, delivering fast, conclusive checks on thread conformity.

• Dual-Ended Go/No-Go for Quick Validation: One end verifies that a correctly sized internal thread will accept the gauge, while the other end ensures oversize conditions are caught—delivering fast, confident pass/fail decisions on every hole.
• Precise UNS 2B, 1 1/16 x 16 Size: Engineered to exact Unified Thread Standard for Class 2B internal threads, this gauge provides repeatable checks that align with standard hole dimensions and mating parts, reducing guesswork during inspection.
• Ergonomic, Durable Construction: Knurled, metal body with robust end fittings offers a secure grip and long tool life in busy environments, while the compact form fits into tight inspection areas.

Using this gauge on the shop floor or in QC labs helps streamline setup, shorten inspection cycles, and improve first-pass acceptance for threaded assemblies. Its precise sizing and intuitive go/no-go operation deliver clear, reliable results that support consistent performance and reduced downtime across manufacturing, automotive, and aerospace workflows.