JBO Thread Ring Gauge (GO) - UNF - Left Hand - 2A - 1/4 x 28 Shrink Fit Holders helping you maintain tight tolerances

helping you maintain tight tolerances on small pockets

helping you maintain consistent tool paths and dimensional accuracy across challenging profiles

Carbide-tipped design (K10) for long tool life: The carbide tip delivers superior wear resistance and sustained sharpness

reliable GO checks to confirm parts meet exact threading standards

JBO Thread Ring Gauge (GO) - UNF - Left Hand - 2A - 1/4 x 28 Shrink Fit Holders helping you maintain tight tolerancesThe JBO Thread Ring Gauge (GO) for UNF 1 4 x 28, Left Hand, 2A is a precision inspection tool designed to verify external thread diameters and pitch for components with UNF left hand threads. Its ideal for machinists, inspectors, maintenance crews, and quality controlled production lines that require reliable conformance checks and fast pass fail decisions on threaded parts. Crafted from hardened steel, this GO gauge delivers exceptional durability