Spiral Fluted Tap Series 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-BLF Spiral Fluted Taps, Deep Hole Use Spiral Fluted Taps (for blind hole) Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes M30 × 3.5 ISO2 SG030TANEBJ 2.5P 180 44 - 92 22 18 21 4 4 M33 × 3.5 ISO2 SG033TANEBJ 2.5P 180 46 - 92 25 20 23 4 4 M36 × 4 ISO2 SG036UANEBJ 2.5P 200 52 - 102 28 22 25 4 4 Spiral Fluted Taps (for through hole) M39 × 4 ISO2 SG039UANEBJ 2.5P 200 52 - 102 32 24 27 4 4 Spiral Pointed Taps (for through hole) Hand Taps Cemented Carbide Taps Roll Taps Special Thread Taps Simple Inspection Tools Pipe Taps Thread Mills Dies Center Drills Centering Tools DIN SP-33 84