JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M5 x 0.5 FMH FLH FHH S&E A&NF M&D improve first-pass accuracy

improve first-pass accuracy

With a 50 mm overall length and a 20 mm flute length

supporting clean hole surfaces even in challenging materials

The combination of left-hand spiral flute and right-hand cutting supports controlled material removal

it pairs stability with versatility for a wide range of tools and applications

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M5 x 0.5 FMH FLH FHH S&E A&NF M&D improve first-pass accuracyThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. It supports left hand M5 x 0. 5 holes and uses a clear Go No Go system to quickly confirm whether a threaded hole meets the required size. This makes it ideal for engineers, machinists, quality inspectors, and assembly teams working with tight tolerances. The Go No Go design helps you verify fit fast, reducing guesswork during setup and inspection. Built for