The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external thread diameters with quick, reliable go/no-go checks. It’s specifically sized for UNS Right Hand 2A threads in the 1 3/4 x 8 range, helping you confirm conformance to Unified thread standards at a glance.

Crafted from hardened steel, this gauge delivers durability for daily use in demanding environments—from manufacturing floors to automotive service bays and aerospace maintenance. The rugged construction resists wear to maintain accuracy over countless inspections.

• NoGo Design for Quick Conformance Checks: Quickly identify non-conforming threads—if the gauge doesn’t allow a proper fit, you know the part is out of tolerance, reducing inspection time and potential rework.
• Precise UNS Right Hand 2A Sizing (1 3/4 x 8): Specifically matched to the UNS right-hand 2A class and the 1 3/4 x 8 size for consistent, repeatable measurements across parts and batches.
• Hardened Steel Construction for Longevity: Built from high-quality hardened steel to withstand daily use in busy workshops while preserving edge accuracy and extending service life.

Using the JBO Thread Ring Gauge (NoGo) streamlines quality control by delivering clear, dependable measurements of external threads, helping you prevent mismatches and ensure reliable performance of threaded assemblies. It supports efficient inspection routines, reduces downtime, and enhances overall accuracy across production and maintenance workflows.