JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M40 x 1 FLH delivering stability and vibration damping

delivering stability and vibration damping for cleaner finishes

This reamer is designed to deliver tight hole tolerances and a clean bore

This reamer uses a taper shank for secure mounting

Whether performing incoming quality checks

so you can focus on cutting quality and part accuracy

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M40 x 1 FLH delivering stability and vibration dampingThe JBO Thread Ring Gauge NoGo (Metric Fine, Left Hand) is a precision inspection tool designed to verify external thread diameters on components with metric fine threads, including M40 x 1. Its ideal for machinists, inspectors, and maintenance teams who need fast, dependable checks to confirm parts meet exact specifications. Crafted from hardened steel for maximum durability, this NoGo gauge resists wear in demanding workshop environments, delivering