JBO Thread Ring Gauge (NoGo) - UNF - Right Hand - 2A - No. 2 x 64 ER Mini Collet Chucks designed for precise hole finishing

designed for precise hole finishing in machining and fabrication

and procurement activities

Intermediate precision carbide (k10) with ISO H4 tolerance: Delivers precise bore size and dependable dimensional control for consistent results across production runs

supporting accurate assemblies in precision machining workflows

wear-resistant body that maintains sharpness for longer tool life and repeatable hole sizing

JBO Thread Ring Gauge (NoGo) - UNF - Right Hand - 2A - No. 2 x 64 ER Mini Collet Chucks designed for precise hole finishingThe JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external UNF threads on fasteners and machined components. This NoGo gauge is sized for Right Hand threads in the No. 2 x 64 range (2A class), making it ideal for manufacturers, inspectors, and shop floor technicians who need quick, reliable pass fail checks against Unified thread standards. UNF Right Hand NoGo Design: Provides a clear pass fail indication for external