The JBO Thread Plug Gauge is a precision Go/No-Go tool designed for quick, reliable verification of UNF threaded holes. It’s ideal for manufacturers, automotive shops, and aerospace maintenance teams who need to confirm thread compliance before assembly, reducing the risk of misfits and costly rework.

This right-hand gauge is sized for 5/8 x 18 UNF holes and features a 2B internal tolerance, providing clear pass/fail results that streamline inspections and speed setup on the shop floor.

• Fast go/no-go verification: Delivers an immediate pass or fail indication, enabling rapid decisions and minimizing inspection time without sacrificing accuracy.
• UNF 5/8 x 18 right-hand compatibility: Precisely matched to the standard thread size and orientation, ensuring reliable checks that align with common fasteners and mating components.
• Durable, ergonomic construction: Rugged, long-lasting design with a comfortable grip withstands daily use in busy environments while maintaining consistent performance.

Using the JBO Thread Plug Gauge helps you streamline quality control, prevent assembly delays, and maintain consistent results across parts and runs. Its straightforward go/no-go action supports confident decisions, reduces downtime, and protects downstream productivity by catching non-conforming threads at the source.