JBO Thread Ring Gauge (NoGo) - Metric Coarse - Right Hand - 6g - M42 x 4.5 M&D 2-flute design with 6 mm

2-flute design with 6 mm shank for rigidity and compatibility: The robust shank and efficient flute design minimize chatter and fit standard tool holders for easy setup and reliable performance

Each unit is manufactured to order by Toolex Ltd

delivering accurate geometry and a refined surface finish across aluminum

helping maintain steady workflows

Whether resizing a bore for a fastener or achieving a precise final diameter for a critical component

JBO Thread Ring Gauge (NoGo) - Metric Coarse - Right Hand - 6g - M42 x 4.5 M&D 2-flute design with 6 mmThe JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external metric coarse threads. Calibrated for M42 x 4. 5 with a 6g tolerance and a right hand thread, it helps inspectors, machinists, and quality teams quickly confirm that threaded components meet the required size and fit. Designed for busy shops, this NoGo gauge streamlines go no go checks, supporting consistent, reliable results across production and inspection tasks.