1/4-28 UNF Class 3B Taperlock Thread Plug Gage Set
Taperlock Thread Plug Gage Double-End Set for inspecting the pitch diameter and functional thread for internal threaded products. All gage sets include Go Member, NoGo Member and Handle marked with nominal size, class of fit and pitch diameters. All gage members are serialized and include a printed, 17025 Accredited Long Form Certificate.