Overall Thread Shank Size of Length of length length dia. square square L ℓ Ds K ℓk ZELX SS NPTF (for blind hole) Spiral Fluted Taps Taps for American Dryseal Taper Pipe Threads Specification (for through hole) Spiral Fluted Taps ■Suitable for tapping stainless steels, chrome steels and E chrome molybdenum steels. Oxide NPTF 3/4 ~ Recommended Tapping Speed depending on Materials (for through hole) Spiral Pointed Taps ow carbon steels Alloy steels Stainless steels 5 5 5 For icon explanation, refer to P.50 TYPE:1 TYPE:2 Hand Taps Carbide Taps Cemented Segment:1H Size Class Code Chamfer L ℓ Projection Ds K ℓk No. of Type Roll Taps (inch) (inch) (inch) (inch) (inch) (inch) flutes For Dryseal American Pipe Threads NPTF 1/16-27 ANSI G Y83660 2.5P 2.125 0.687 0.312 0.312 0.234 0.375 4 1 Y83661 0.437 0.328 1 NPTF 1/8-27 ANSI G 2.5P 2.125 0.75 0.312 0.375 4 Simple Inspection Tools Pipe Taps Y83662 0.312 0.234 2 NPTF 1/4-18 ANSI G Y83663 2.5P 2.437 1.062 0.459 0.562 0.421 0.437 4 1 NPTF 3/8-18 ANSI G Y83664 2.5P 2.562 1.062 0.454 0.7 0.531 0.5 4 1 NPTF 1/2-14 ANSI G Y83665 2.5P 3.125 1.375 0.579 0.687 0.515 0.625 4 2 NPTF 3/4-14 ANSI G Y83666 2.5P 3.25 1.375 0.565 0.906 0.679 0.687 4 2 NPTF 1-11.5 ANSI G Y83667 2.5P 3.75 1.75 0.678 1.125 0.843 0.812 4 2 Thread Mills Dies Center Drills Centering Tools ANSI Pipe-2 303