The JBO UNF Thread Plug Gauge is a precision inspection tool designed to verify internal threads to UNF standards. Built for professionals across manufacturing, automotive, and aerospace, it helps quality teams quickly assess threaded holes and confirm conformance to the 1 3/8 x 12 UNF right-hand specification.

• Go/No-Go quick conformance check: The dual ends provide an immediate pass/fail indication, speeding inspections and reducing guesswork in high-volume production.
• Ergonomic, durable design: A knurled body offers a secure grip and reliable handling in tight spaces, built to withstand daily workshop use.
• Right-hand 2B UNF tolerance: Precisely matched to the 1 3/8 x 12 UNF right-hand thread standard, delivering consistent, repeatable measurements for dependable quality control.

By integrating this gauge into your inspection workflow, you’ll accelerate threaded-hole validation, minimize downtime, and ensure every part threads correctly in assemblies—giving you confidence in fit, function, and overall manufacturing quality.