JBO Thread Ring Gauge (GO) - UNF - Right Hand - 3A - 1 x 12 NCDC Drill Chuck secure seating in common toolholders

secure seating in common toolholders for quick setup and reliable performance

Finish: Bright finish for reduced friction and smooth cutting

smooth cutting action during reaming

and reliable performance across engineering

Taper Shank Design for precise alignment: Fits standard tool holders with secure seating

JBO Thread Ring Gauge (GO) - UNF - Right Hand - 3A - 1 x 12 NCDC Drill Chuck secure seating in common toolholdersThe JBO Thread Ring Gauge (GO) for UNF Right Hand 3A 1 x 12 is a go no go gauge that helps you verify external thread diameters quickly and reliably. Its ideal for machinists, quality inspectors, and shop floor teams aiming to confirm that threaded components conform to the UNF standard and maintain consistent performance in assemblies. Constructed for durability, the gauge is made from hardened steel to withstand daily use in demanding environments.