The JBO Thread Ring Gauge (GO) for UNC threads is a precision tool designed to verify external thread diameters and thread form on fasteners and machined parts. Specifically calibrated for 3/8-16 UNC right-hand threads, it enables inspectors, machinists, and quality teams to quickly determine whether a component meets required thread standards in production, assembly, or service contexts.

Crafted from hardened steel, this GO gauge delivers durable wear resistance for daily use in demanding environments. Its straightforward design provides an immediate pass/fail indication, helping you identify properly conforming threaded components at a glance and keep inspections moving smoothly.

• Precise UNC Go Gauge for 3/8 x 16 Right-Hand Threads: Quick, reliable confirmation that external threads meet the 3/8-16 UNC specification, preventing undersized or oversized parts from advancing in production.
• Hardened Steel Construction: Built to endure repeated use in rugged environments, with excellent wear resistance to maintain accuracy over time.
• Easy Pass/Fail Inspection: Intuitive Go/No-Go verification that speeds QC checks, reduces guesswork, and minimizes downtime on the line.

This gauge helps streamline quality control by offering a fast, dependable check of external threads, improving consistency across parts and assemblies, and saving inspection time. With durable construction and precise sizing for 3/8 x 16 UNC right-hand threads, it supports repeatable results and long tool life in busy workshops and manufacturing settings.