The JBO Thread Plug Gauge (GO) is a precision instrument designed to quickly and reliably verify threaded holes. Specifically configured for metric fine threads, this left-hand GO gauge checks M52 x 1.5 holes to the 6H standard, helping quality teams and machinists confirm holes meet exact size and pitch requirements. Crafted from hardened steel, it delivers durable, long-lasting performance in demanding shop environments.

• Precise metric fine GO gauge for M52 x 1.5 left-hand threads: Provides accurate, repeatable checks to confirm threaded holes meet exact size and pitch specifications.
• Hardened steel construction for durability: Withstand wear and heavy use, delivering reliable performance over time in busy workshops and production lines.
• User-friendly design for fast inspections: Easy to identify and use during routine QC, helping technicians make quick pass/fail decisions with confidence.

Using this gauge supports a smoother workflow by reducing inspection time, minimizing rework, and helping you maintain consistent quality across components and assemblies. It’s a dependable tool for engineers, inspectors, and shop floor technicians who demand precise, repeatable threaded-hole verification.