JBO Thread Ring Gauge (NoGo) - Metric Coarse - Left Hand - 6g - M3.5 x 0.6 ER Mini Collet Chucks ISO H4 tolerance: Holds finished

ISO H4 tolerance: Holds finished hole sizes within tight limits so parts assemble without extra fitting steps

This reamer is designed to deliver precise hole diameters with tight tolerances

71 mm reach) to handle demanding holes

Manufactured to DIN 212-B specifications

helping you achieve repeatable accuracy across production runs

JBO Thread Ring Gauge (NoGo) - Metric Coarse - Left Hand - 6g - M3.5 x 0.6 ER Mini Collet Chucks ISO H4 tolerance: Holds finishedThe JBO Thread Ring Gauge (NoGo) Metric Coarse, Left Hand, 6g, M3. 5 x 0. 6 is a precision inspection tool for verifying external thread diameters and tolerance. Its ideal for engineers, machinists, quality teams, and maintenance professionals who need quick, reliable checks during production, assembly, and repair work. Made from hardened steel for outstanding durability, this NoGo gauge resists wear in busy workshops and long shifts. Its simple, user