JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M42 x 1 ER Collet Chucks ” that refers to blanks

” that refers to blanks ready to be machined into the finished reamer

It complies with DIN 212-B tolerance: D = 0 + 0

BS 328/4 taper shank for secure mounting: Fits standard tool holders with minimal runout

so you can focus on accuracy and throughput with confidence

Form AD: Form AD configuration ensures straightforward integration with existing BT40 tool-holding systems

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M42 x 1 ER Collet Chucks ” that refers to blanksThe JBO Thread Ring Gauge (NoGo) Metric Fine, Left Hand, 6g, M42 x 1 is a precision inspection tool designed to verify external thread diameters. Its ideal for engineers, machinists, quality teams, and workshop technicians who need quick, reliable checks on threaded components to ensure they meet exact specifications. Crafted from hardened steel for durability, this NoGo gauge resists wear in busy shop environments and delivers long lasting