Roll 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 Spiral Fluted Taps (for blind hole) MHRZ Roll Taps for Carbon Steels of Middle Hardness Spiral Fluted Taps (for through hole) Specification Coating 2D Spiral Pointed Taps (for through hole) Recommended Tapping Speed depending on Materials High carbon steels Alloy steels Thermal re ned steels 10〜30 10〜30 10〜20 ~35HRC Hand Taps For icon explanation, refer to P.50 TYPE:21 Cemented Carbide Taps Roll Taps TYPE:2 TYPE:3 Pipe Taps Simple Inspection Tools Segment:1J Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe Type Stock (inch) (inch) (inch) (inch) (inch) (inch) (inch) RS6.0MIOCTP 4P M6 × 1 D8 3.15 0.433 1.181 1.713 0.255 0.191 0.312 5 1 ○ RS6.0MIOCTB 2P Thread Mills RS8.0N9OCTP 4P M8 × 1.25 D9 3.543 0.472 1.382 1.831 0.318 0.238 0.375 6 2 ○ RS8.0N9OCTB 2P RS010OOOCTP 4P M10 × 1.5 D10 3.937 0.512 - 2.008 0.323 0.242 0.406 8 3 ○ RS010OOOCTB 2P RS010N9OCTP 4P Dies M10 × 1.25 D9 3.937 0.512 - 2.008 0.323 0.242 0.406 8 3 ○ RS010N9OCTB 2P RS012OOOCTP 4P M12 × 1.5 D10 4.331 0.591 - 2.205 0.367 0.275 0.437 8 3 ○ RS012OOOCTB 2P RS012NOOCTP 4P M12 × 1.25 D10 4.331 0.591 - 2.205 0.367 0.275 0.437 8 3 ○ Center Drills RS012NOOCTB 2P RS014OOOCTP 4P M14 × 1.5 D10 4.331 0.551 - 2.205 0.429 0.322 0.5 8 3 ○ RS014OOOCTB 2P Centering Tools ANSI RO-13 294