The JBO Thread Plug Gauge is a UNEF Go-No/Go tool designed to verify left-hand threaded holes with precise 13/16 x 20 dimensions. Its go/no-go design gives you fast, decisive feedback on whether a thread meets spec, helping prevent misfits and startup delays in manufacturing, automotive, and aerospace applications.

• Go/No-Go Quick Checks: Instantly determine if a hole's thread is within spec, reducing inspection time and preventing incorrect assemblies.
• Precise UNEF 13/16 x 20 Left-Hand Thread: Specifically sized to verify left-hand threads, ensuring correct fitment and reliable performance across assemblies.
• 2B Tolerance for Consistent Results: The 2B class delivers repeatable go/no-go outcomes, helping teams standardize inspections and reduce rework.

Integrating this gauge into your workflow speeds up quality control, minimizes downtime, and improves overall accuracy in threaded-hole inspections. It supports consistent results across shifts and teams, aiding traceability and confidence during audits, vendor reviews, and difficult assemblies on the shop floor.