JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M12 x 1.25 FLH helps reduce wear and maintain

helps reduce wear and maintain consistent radii and finishes over multiple runs

Its straight shank ensures compatibility with many clamping and holding systems

delivering longer tool life and steadier machining performance

finish-ready holes with minimal rework

consistent corner radii for mold cavities and die features

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M12 x 1.25 FLH helps reduce wear and maintainThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. It helps machinists, engineers, quality inspectors, and maintenance teams quickly verify threaded holes meet the M12 x 1. 25 fine thread standard, ensuring reliable mating with fasteners. This left hand gauge is built for durability and accuracy in demanding assemblies, conforming to the 6H tolerance to ensure proper fit and predictable performance. Go No Go