JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6G - M21 x 1 Tapping Chucks and smoother production runs—whether you’re

and smoother production runs—whether you’re in a shop

stable cutting performance and long tool life

Diameter: 10 mm cutting diameter for precise pocketing

A corner chamfer on the end face helps reduce cutting edge chipping and extend tool life

the chuck delivers a strong

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6G - M21 x 1 Tapping Chucks and smoother production runs—whether you’reThe JBO Thread Plug Gauge is a metric fine Go No Go gauge designed to verify internal threads with precision. Its built for machinists, inspectors, and assembly teams working with M21 x 1 right hand threads (6G) to quickly validate hole acceptance, even in high volume productions. The hardened steel construction delivers durable, long lasting performance in tough shop environments. Go No Go precision for metric fine threads: Quickly determine if a