Spiral Fluted Tap Overall Thread Thread+Neck Shank Size of Length of length length length dia. square square L ℓ ℓn Ds K ℓk ZELX AL SP Spiral Fluted Taps for Aluminum Spiral Fluted Taps (for blind hole) Size Class Code Chamfer L ℓ ℓn Ds K ℓk No. of Type (inch) (inch) (inch) (inch) (inch) (inch) flutes 7/16-14UNC GH3 Y86520 2.5P 3.937 0.945 - 0.323 0.242 0.406 3 3 GH3 Y86524 1/2-13UNC 2.5P 4.331 1.142 - 0.367 0.275 0.437 3 3 GH5 Y86525 Spiral Fluted Taps (for through hole) 1/2-20UNF GH3 Y86526 2.5P 3.937 0.866 - 0.367 0.275 0.437 3 3 Spiral Pointed Taps (for through hole) Hand Taps Cemented Carbide Taps Roll Taps Pipe Taps Simple Inspection Tools Thread Mills Dies Center Drills Centering Tools ANSI SP-19 206