JBO UNF Go-No/Go Thread Plug Gauge, Right Hand, 3B, 1 1/8 x 12, is a precision inspection tool designed for fast, reliable checking of threaded holes. Whether you’re in manufacturing, automotive, or aerospace, this gauge helps you verify that every hole meets the Unified thread standards so fasteners will fit correctly on the first try.

With its go/no-go design, you can quickly distinguish conforming from non-conforming threads, reducing downtime and helping maintain consistent quality across batches. Its compact, portable form makes it a staple in any shop, technician’s kit, or on-site inspection tray.

• Go/No-Go quick checks: Enables fast pass/fail verification of thread size and tolerance against Unified standards, reducing inspection time and helping you identify non-conforming holes at a glance.
• UNF, Right-Hand, 3B precision: Calibrated to UNF right-hand thread specifications with 3B tolerance, delivering reliable fit assessment for 1 1/8 x 12 threads.
• Durable, ergonomic design: Knurled grip and robust ends provide secure handling in busy environments and withstand repeated use for long service life.

This plug gauge streamlines quality control by delivering clear, repeatable results that support faster production cycles and accurate assembly. Its rugged construction and precise geometry give technicians confidence that threaded components will meet spec, reducing rework and improving overall workflow across the shop floor.