JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 2A - 2 1/2 x 4 Hydraulic Expansion Chucks Left-hand spiral flute with right-hand

Left-hand spiral flute with right-hand cutting: promotes controlled chip flow and stable cutting

promoting a smoother bore finish and predictable cutting action

professional finish on every piece

while the straight shank provides stable handling during manual reaming

The TiAlN coating reduces friction and manages heat

JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 2A - 2 1/2 x 4 Hydraulic Expansion Chucks Left-hand spiral flute with right-handThe JBO Thread Ring Gauge (NoGo) UNC Right Hand 2A 2 1 2 x 4 is a precision inspection tool designed to verify external thread diameters against Unified thread standards. Built from hardened steel with a clear No Go design, it delivers durable, reliable performance on busy shop floors and makes non conforming threads easy to spot so assemblies stay correct. Clear No Go design for fast pass fail checks: The No Go feature makes non conforming threads