JBO Thread Ring Gauge (NoGo) - UNJF - Right Hand - 3A - No. 6 x 40 End Mill Holders while the carbide construction withstands

while the carbide construction withstands demanding milling conditions common in mold and die work

The stub length and straight shank simplify setup in compact tooling arrangements

accurate internal bores

reducing clogging and chatter

Sized for No

JBO Thread Ring Gauge (NoGo) - UNJF - Right Hand - 3A - No. 6 x 40 End Mill Holders while the carbide construction withstandsThe JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external thread diameters quickly and reliably. Built for engineers, inspectors, and shop floor technicians across manufacturing, automotive, and aerospace, this NoGo gauge helps identify non conforming threads at a glance, supporting consistent quality and proper fitment. It targets UNJF right hand threads with a 3A class and the No. 6 x 40 size, serving as a trusted