UN Reversible Gages
Thread gages inspect the pitch diameter and the functional thread
for both internal and external threaded products. The thread gages listed are made
to Class X tolerances per ANSI B1.2 (Unified inch screw threads). All thread gages
are supplied with a Certificate of Accuracy. Reversible plug gages are stocked in 2B &
3B (inch) classes of fit. Stocked reversible plugs are chrome plated. All thread gages are marked
with nominal size, threads per inch (inch), class of fit, and pitch diameters.