The JBO Thread Plug Gauge (Go/NoGo) is a precision inspection tool designed to verify NPTF threaded holes. Right Hand, 3/8 x 18. It’s a practical addition to any workshop where accurate thread verification is critical, from production floors to service bays.

Whether you’re in manufacturing, automotive assembly, or aerospace maintenance, this gauge enables fast go/no-go checks to confirm threads meet spec, helping you avoid misfits and rework while speeding up quality control.

• Go/No-Go Quick Conformance Check: Instantly distinguish conforming from non-conforming threads, streamlining inspections and reducing guesswork.
• NPTF Right-Hand 3/8 x 18 Precision: Precisely sized to the NPTF standard, delivering reliable, repeatable checks across parts and batches.
• Durable, Easy-to-Handle Knurled Design: Textured surface provides a secure grip for controlled, accurate measurements in busy work environments.

This plug gauge supports faster decision-making in quality workflows, helping you maintain tight tolerances and consistent results across assemblies. Its robust design brings confidence to every inspection, ensuring proper fitment and dependable performance in daily use.