The JBO Thread Ring Gauge (NoGo) for UNF right-hand threads is a precision inspection tool sized 1 1/4 x 12, class 2A. This NoGo ring gauge helps manufacturers, automotive shops, and aerospace labs quickly verify external thread diameters against Unified thread standards, flagging non-conforming parts at a glance.

• Hardened steel construction: Built to withstand daily use in busy workshop environments, delivering long wear life and stable, repeatable measurements.
• NoGo design for fast conformance checks: The NoGo limit makes it easy to identify out-of-spec or oversized threads, reducing inspection time and minimizing risk of misfits.
• UNF Right‑Hand 1 1/4 x 12, 2A precision: Calibrated to exact UNF right-hand thread standards so you can trust fitment checks on mating components and fasteners.

Using this gauge streamlines quality control, minimizes downtime between production steps, and supports consistent, reliable results across operators. With its robust materials and precise sizing, you can confidently verify threaded parts, improve workflow efficiency, and protect downstream assemblies from misfits.