JBO Thread Ring Gauge (GO) - UNF - Right Hand - 3A - No. 3 x 56 FMH with fewer rework steps and

with fewer rework steps and longer tool life in demanding applications

2A): Enables fast pass/fail checks to verify minimum external thread size

W-Coated Carbide for Longer Life: The tough carbide with a wear‑resistant W coating minimizes wear

This reamer is designed to help you finish holes to exact size with minimal downtime

spiral‑flute reamer with a straight shank

JBO Thread Ring Gauge (GO) - UNF - Right Hand - 3A - No. 3 x 56 FMH with fewer rework steps andThe JBO Thread Ring Gauge GO for UNF threads is a precision inspection tool used to verify external thread diameters quickly and reliably. Designed for machinists, inspectors, engineers, and shop floor professionals, it enables fast GO No Go checks to confirm that UNF threaded parts conform to standard sizes. Crafted from hardened steel in a right hand, 3A configuration (No. 3 x 56), it delivers durable, repeatable results in demanding environments.