The JBO Thread Plug Gauge is a UNF Go-No/Go gauge designed for precise verification of internal threads. Sized for right-hand 7/16 x 20 threads with a 3B tolerance, it helps inspectors and machinists quickly confirm holes meet Unified standards.

Built for everyday use on shop floors, in QA labs, and in maintenance environments, this gauge delivers reliable go/no-go feedback that speeds setup and ensures correct fastener fitment across manufacturing, automotive, and aerospace applications.

• Go/No-Go Quick Checks: The go/no-go design lets you instantly determine if a threaded hole is within tolerance, reducing inspection time and avoiding misfits.
• UNF 7/16 x 20 Right-Hand, Class 3B: Precisely matched to Unified thread standards, supporting reliable interchangeability and proper fastener seating across compatible parts.
• Durable, Ergonomic Construction: Textured grip and robust ends provide comfortable handling on busy benches and in tight spaces, helping you achieve repeatable results every time.

With the JBO Thread Plug Gauge, you gain fast, confident thread verification that speeds setup, reduces downtime, and improves first-pass acceptance of parts. Its compatibility with UNF standards ensures consistent results across lots and suppliers, helping teams maintain schedules and quality targets on projects in manufacturing, automotive, and aerospace.