Spiral Fluted Tap Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk SP Spiral Fluted Taps Spiral Fluted Taps (for blind hole) Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type (inch) (inch) (inch) (inch) (inch) (inch) (inch) flutes GH5 SSU24Z5NEB 1 1/2-6UNC 2.5P 7.874 2.323 - 4.016 1.233 0.925 1.125 4 4 GH6 SSU24Z6NEB GH4 SSU24S4NEB Spiral Fluted Taps (for through hole) 1 1/2-12UNF 2.5P 7.874 2.323 - 4.016 1.233 0.925 1.125 4 4 GH5 SSU24S5NEB 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-5 192