Brubaker Tool 7/16-14 UNC GH3 extension spiral-point tap, 3-flute, with a bright finish. Part number 11321 (MFR 11321) features a 6 in overall length, 1-7/16 in thread length, and a 0.323 in shank diameter. This extension tap is designed for extended-reach tapping of UNC 7/16-14 holes. GH3 denotes the thread-limit designation for this tap.
