JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 4h - M42 x 1 FHH The 8mm round bore provides

The 8mm round bore provides a secure grip for small-to-medium workpieces

making it reliable for mold cavities and detailed die features

Ideal for finishing operations in steel

and challenging geometry while preserving cutting stability for consistent results

and is supplied by Toolex Ltd for BS 328/4 standard applications

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 4h - M42 x 1 FHH The 8mm round bore providesThe JBO Thread Ring Gauge (GO) Metric Fine is a precision tool designed to verify external thread diameters with confidence. Crafted for professionals in manufacturing, machining, automotive, and quality control, this GO gauge helps you quickly determine whether a threaded component meets exact specifications. Its metric fine threading and 4h tolerance ensure reliable, repeatable checks for each part you inspect. Precise metric fine GO gauge (M42 x 1,