The JBO Thread Ring Gauge (NoGo) for UNF right-hand threads is a precision inspection tool designed to verify external thread diameters on fasteners and threaded components. Sized specifically for 1 1/8 x 12 UNF, this gauge helps manufacturing, automotive, and aerospace teams quickly confirm that threads meet Unified standards. The NoGo design provides an immediate visual indication when a thread is out of tolerance, helping prevent improper fitment and costly rework.

• Fast conformance verification: The NoGo segment gives an unmistakable pass/fail cue, allowing inspectors to quickly identify non-conforming threads and keep production moving.
• UNF right-hand 3A accuracy: Precisely matched to the 1 1/8 x 12 UNF right-hand standard, ensuring consistent measurements across parts and suppliers.
• Durable hardened steel construction: Built to endure daily use in busy shops, providing long tool life and reliable performance in demanding environments.

Crafted from hardened steel, this gauge delivers durable, repeatable performance across countless inspections. It helps reduce downtime, improves measurement reliability, and supports consistent quality control for threaded components in diverse industries.