The JBO Thread Plug Gauge is a precision go/no-go tool designed to verify BSF threaded holes quickly and reliably. It’s ideal for professionals across manufacturing, automotive, and aerospace, as well as engineers, quality inspectors, and shop technicians who need accurate checks for 1/2 x 16 right-hand threads.

Its compact, durable design features a knurled body for a secure grip and color-coded ends that clearly indicate the Go and No-Go checks. The go end threads into the hole to confirm the thread size and pitch, while the no-go end should not pass through, delivering an unambiguous pass/fail result that speeds up inspection and reduces guesswork.

• Go/No-Go Quick Check: Instantly confirms whether a hole meets the 1/2 x 16 BSF right-hand, medium class standard, enabling fast pass/fail decisions and reducing rework.
• Ergonomic, Durable Construction: Knurled grip for secure handling and robust design with color-coded ends for easy identification during setup and use.
• BSF 1/2 x 16 Right-Hand, Medium Class Spec: Precisely matched to the BSF thread profile and tolerance, delivering reliable, repeatable results across parts and production runs.

Using this gauge streamlines quality control, accelerates assembly decisions, and helps ensure every threaded connection fits correctly the first time. With dependable Go/No-Go readings, you can protect against misfits, reduce downtime, and maintain consistent performance across jobs and shifts.