JBO Thread Plug Gauge (NoGo) - Metric Fine - Right Hand - 6G - M42 x 1.5 FLH clean hole finishes with reliable

clean hole finishes with reliable performance

it clearly indicates when a hole is out of tolerance

and increased productivity in both professional shops and DIY workshops

reliable mounting to DV40 spindles with repeatable tool changes and consistent performance

JBO Thread Plug Gauge (NoGo) - Metric Fine - Right Hand - 6G - M42 x 1.5 FLH clean hole finishes with reliableThe JBO Thread Plug Gauge (NoGo) in Metric Fine is a precision tool designed to verify internal threads in metric fine sizes. It targets right hand threads with 6G tolerance and a size of M42 x 1. 5, helping inspectors and machinists confirm that threaded holes meet the required fit. Built for reliable performance in daily use, this gauge enables quick, repeatable checks that support consistent quality control across parts and assemblies. Made from