JBO Thread Plug Gauge (NoGo) - Metric Fine - Right Hand - 6H - M55 x 4 FLH 3 precision rating and a

3 precision rating and a 160 mm gauge length

and accurate profiles

reducing pass/fail rates in assemblies

aligned with DIN 8089 standards for dependable

and achieving consistent results across batches

JBO Thread Plug Gauge (NoGo) - Metric Fine - Right Hand - 6H - M55 x 4 FLH 3 precision rating and aThe JBO Thread Plug Gauge (NoGo) Metric Fine is a precision inspection tool designed to verify metric fine threaded holes with confidence. Aimed at engineers, machinists, quality inspectors, and shop crews, this NoGo gauge helps you quickly confirm whether a hole meets the required metric fine specification for reliability and proper assembly. Its specifically sized for M55 x 4, right hand threads, with 6H tolerance to ensure accurate gauging across