JBO Thread Ring Gauge (NoGo) - Metric Coarse - Right Hand - 4h - M2.5 x 0.45 RPTECH you’ll achieve true bore dimensions

you’ll achieve true bore dimensions with a clean surface finish and repeatable results

secure mounting in compatible holders

standard-length reamer made from high-speed steel (M2)

91 mm reamer is suitable for mid-to-precision manufacturing environments that demand dependable performance and repeatable results

JBO Thread Ring Gauge (NoGo) - Metric Coarse - Right Hand - 4h - M2.5 x 0.45 RPTECH you’ll achieve true bore dimensionsThese JBO Thread Ring Gauges NoGo are precision tools designed to quickly verify the external thread diameter of metric coarse threads, specifically M2. 5 x 0. 45, with a right hand thread and 4h tolerance. Built for professional shops and workbenches, they help inspectors and machinists confirm that parts meet the required size and fitment standards, and their hardened steel construction resists wear in demanding environments for reliable daily use.