The JBO Thread Plug Gauge is a precision Go/No-Go tool designed to verify UNF threaded holes. Sized No. 2 x 64 with Right-Hand threading and a 3B tolerance, it’s built for professionals across manufacturing, automotive, and aerospace who need quick, reliable thread verification.

Its dual-end design lets you check both the Go and No-Go limits in a single test, delivering fast pass/fail feedback and helping ensure proper thread engagement during setup, inspection, and quality control.

• Go/No-Go testing for UNF threads: Quickly determine if a hole meets the required limits, speeding up inspections and reducing guesswork.
• Right-Hand, 3B UNF compatibility: Precisely matches UNF 3B specifications for consistent hole sizing and reliable fit across components.
• Dual-end, ergonomic construction: Dual testing ends with a textured handle provide comfortable, repeatable checks that withstand daily workshop use.

Using this gauge streamlines threading inspections by providing clear go/no-go results in seconds, helping you lock in correct thread engagement, minimize downtime, and maintain consistent quality across batches. The durable, easy-to-hold design supports steady measurements in busy environments, making it a dependable part of your inspection toolkit.