Overall Thread Shank Size of Length of length length dia. square square L ℓ Ds K ℓk ZELX CARB CI Carbide Taps for Cast Irons Size Class Code Chamfer L ℓ Ds K ℓk No. of Type (for blind hole) Spiral Fluted Taps (inch) (inch) (inch) (inch) (inch) flutes Y83876 4P 1/2-13UNC GH5 3.375 1.656 0.367 0.275 0.437 4 5 Y83877 1.5P Y83828 4P GH3 (for through hole) Spiral Fluted Taps Y83829 1.5P 1/2-20UNF 3.375 1.656 0.367 0.275 0.437 4 5 Y83878 4P GH5 Y83879 1.5P Y83834 4P GH3 Y83835 1.5P (for through hole) Spiral Pointed Taps 5/8-11UNC 3.812 1.812 0.48 0.36 0.562 4 5 Y83884 4P GH5 Y83885 1.5P Y83836 4P GH3 Y83837 1.5P 5/8-18UNF 3.812 1.812 0.48 0.36 0.562 4 5 Hand Taps Y83886 4P GH5 Y83887 1.5P Carbide Taps Cemented Roll Taps Simple Inspection Tools Pipe Taps Thread Mills Dies Center Drills Centering Tools ANSI CT-6 279