The JBO Thread Ring Gauge NoGo for UNF right-hand threads is a precision inspection tool sized for 1 3/8 x 12 with an 2A tolerance. It’s designed to help manufacturers, automotive shops, and aerospace assembly lines quickly and reliably verify external thread diameters against Unified thread standards.

The NoGo design lets you identify non-conforming threads at a glance, reducing assembly issues and rework. Crafted from hardened steel, it stands up to daily use in busy shop environments and maintains accurate readings over time.

• Fast Go/No-Go conformance checks: Quickly determine if a threaded part meets the required external thread tolerance, speeding inspections and preventing incorrect fits.
• Rugged, knurled edge for secure handling: Textured grip enhances control and positioning, even with gloves, improving efficiency on crowded workbenches.
• UNF Right-Hand 1 3/8 x 12, 2A-compatible sizing: Precisely matched to Unified thread standards for reliable, repeatable checks with mating parts and other tooling.

Incorporating this gauge into your quality control workflow delivers faster, more consistent inspections, helps you maintain tight thread quality across parts, and supports dependable performance on critical assemblies from manufacturing lines to service shops.