Truthread Thread Ring Gauge (NoGo) - UN - Right Hand - 2A - 1.1/2x20 Drive Ring Carbide-tipped for extended tool life:

Carbide-tipped for extended tool life: K10 carbide tip offers superior wear resistance

The stub-length design adds rigidity for tighter tolerances and better concentricity in deeper pockets or constrained spaces

Screw Clamp Retention: Robust screw clamp securely fastens the insert

repeatable seating in compatible holders and precise sizing

Shank: Straight shank for secure seating in standard reaming fixtures

Truthread Thread Ring Gauge (NoGo) - UN - Right Hand - 2A - 1.1/2x20 Drive Ring Carbide-tipped for extended tool life:Truthread Thread Ring Gauge (NoGo) UN Right Hand 2A 1. 1 2x20 is a precision measuring tool designed specifically for UN threads. Its ideal for engineers, quality inspectors, machinists, buyers, and hobbyists who need fast, reliable checks to confirm threads stay within specification. The NOGO gauge checks the minimum material condition of the part, ensuring that it is within the lower limit of the allowable size. This makes it ideal for use in