The left-hand spiral flute aids chip evacuation in a variety of materials
2 mm diameter and a long-neck design
it’s a specialized solution when precision and consistency are essential
when paired with a 30° helix
with predictable lead times
JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6h - M9 x 0.5 Hydraulic Expansion Chucks The left-hand spiral flute aidsThe JBO Thread Ring Gauge (GO) Metric Fine, Right Hand, 6h M9 x 0. 5 is a precision tool for confirming external thread diameters. Built for quick Go No Go checks, it helps inspectors and machinists verify parts meet exact thread standards in production, assembly, and maintenance tasks. Crafted from hardened steel, the gauge delivers durable, wear resistant performance in busy workshops. Its simple, robust design makes it easy to use across teams,