ZELX SS PO Spiral Pointed Taps for Stainless Steels Size Class Code Chamfer L ℓ ℓn Ds K ℓk No. of Type (for blind hole) Spiral Fluted Taps (inch) (inch) (inch) (inch) (inch) (inch) flutes GH5 Y82646 5/16-24UNF GH6 Y82663 4.5P 2.718 0.669 1.125 0.318 0.238 0.375 3 3 GH7 Y82676 GH3 Y82617 (for through hole) Spiral Fluted Taps 3/8-16UNC GH5 Y82647 4.5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 GH7 Y82668 GH3 Y82618 GH4 Y82633 (for through hole) Spiral Pointed Taps 3/8-24UNF GH5 Y82648 4.5P 2.937 0.748 1.25 0.381 0.286 0.437 3 3 GH6 Y82664 GH7 Y82678 GH3 Y82619 7/16-14UNC 4.5P 3.156 0.866 - 0.323 0.242 0.406 3 4 Hand Taps GH5 Y82649 GH3 Y82620 GH5 Y82650 7/16-20UNF 4.5P 3.156 0.866 - 0.323 0.242 0.406 3 4 GH6 Y82691 GH7 Y82680 Carbide Taps Cemented GH3 Y82621 1/2-13UNC GH5 Y82651 4.5P 3.375 0.984 - 0.367 0.275 0.437 3 4 GH7 Y82681 GH3 Y82622 GH5 Y82652 Roll Taps 1/2-20UNF GH6 Y82692 4.5P 3.375 0.984 - 0.367 0.275 0.437 3 4 GH7 Y82682 GH9 Y82685 9/16-12UNC GH3 Y82653 4.5P 3.593 0.984 - 0.429 0.322 0.5 3 4 Simple Inspection Tools Pipe Taps GH3 Y82654 9/16-18UNF 4.5P 3.593 0.984 - 0.429 0.322 0.5 3 4 GH5 Y82666 GH3 Y82625 5/8-11UNC 4.5P 3.812 1.083 - 0.480 0.36 0.562 3 4 GH5 Y82655 GH3 Y82626 GH4 Y82636 5/8-18UNF GH5 Y82656 4.5P 3.812 1.083 - 0.480 0.36 0.562 3 4 GH6 Y82694 GH7 Y82591 Thread Mills GH3 Y82627 3/4-10UNC 4.5P 4.25 1.201 - 0.590 0.422 0.687 3 4 GH5 Y82657 GH3 Y82628 3/4-16UNF GH5 Y82658 4.5P 4.25 1.201 - 0.590 0.422 0.687 3 4 Dies GH7 Y82592 7/8-9UNC GH4 Y82695 4.5P 4.687 1.339 - 0.697 0.523 0.75 3 4 GH4 Y82696 7/8-14UNF 4.5P 4.687 1.339 - 0.697 0.523 0.75 3 4 GH6 Y82699 1-8UNC GH4 Y82697 4.5P 5.125 1.496 - 0.800 0.6 0.812 3 4 Center Drills 1-12UNF GH4 Y82679 4.5P 5.125 1.496 - 0.800 0.6 0.812 3 4 1 1/8-7UNC GH6 Y82700 4.5P 5.437 1.535 - 0.896 0.672 0.875 4 4 1 1/8-12UNF GH5 Y82701 4.5P 5.437 1.535 - 0.896 0.672 0.875 4 4 1 1/4-7UNC GH6 Y82702 4.5P 5.75 1.535 - 1.021 0.766 1 4 4 Centering Tools 1 1/4-12UNF GH5 Y82703 4.5P 5.75 1.535 - 1.021 0.766 1 4 4 1 3/8-6UNC GH6 Y82705 4.5P 6.062 1.811 - 1.108 0.831 1.062 4 4 1 3/8-12UNF GH5 Y82706 4.5P 6.062 1.811 - 1.108 0.831 1.062 4 4 ANSI PO-10 237