Overall length L Thread length ℓ Thread + Neck length ℓn Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk ⑥ JIS TYPE:1 TYPE:2 Spiral Fluted Taps (for blind hole) ① Spiral Fluted Taps (for through hole) ② Recommended class Segment:1J Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe TYPE MSRP (mm) (mm) (mm) (mm) (mm) (mm) (mm) Spiral Pointed Taps (for through hole) For Metric Threads ③ M6 × 1 G8 RY6.0M8OCTP 4P 62 11 26 33 6 4.5 7 5 1 ¥4,510 M6 × 1 G8 RY6.0M8OCTB 2P 62 11 26 33 6 4.5 7 5 1 ¥4,510 M8 × 1.25 G8 RY8.0N8OCTP 4P 70 12 - 36 6.2 5 8 6 2 ¥6,120 M8 × 1.25 G8 RY8.0N8OCTB 2P 70 12 - 36 6.2 5 8 6 2 ¥6,120 Hand Taps ④ M10 × 1.5 G8 RY010O8OCTP 4P 75 13 - 38 7 5.5 8 8 2 ¥7,400 M10 × 1.5 G8 RY010O8OCTB 2P 75 13 - 38 7 5.5 8 8 2 ¥7,400 M10 × 1.25 G8 RY010N8OCTP 4P 75 13 - 38 7 5.5 8 8 2 ¥7,400 M10 × 1.25 G8 RY010N8OCTB 2P 75 13 - 38 7 5.5 8 8 2 ¥7,400 M12 × 1.75 Cemented Carbide Taps G8 RY012P8OCTP 4P 82 15 - 42 8.5 6.5 9 8 2 ¥11,400 ⑤ M12 × 1.75 G8 RY012P8OCTB 2P 82 15 - 42 8.5 6.5 9 8 2 ¥11,400 M12 × 1.5 G8 RY012O8OCTP 4P 82 15 - 42 8.5 6.5 9 8 2 ¥11,400 M12 × 1.5 G8 RY012O8OCTB 2P 82 15 - 42 8.5 6.5 9 8 2 ¥11,400 M12 × 1.25 G8 RY012N8OCTP 4P 82 15 - 42 8.5 6.5 9 8 2 ¥11,400 Roll Taps M12 × 1.25 G8 RY012N8OCTB 2P 82 15 - 42 8.5 6.5 9 8 2 ¥11,400 ⑥ M14 × 1.5 G9 RY014O9OCTP 4P 88 18 - 45 10.5 8 11 8 2 ¥15,400 M14 × 1.5 G9 RY014O9OCTB 2P 88 18 - 45 10.5 8 11 8 2 ¥15,400 M16 × 1.5 G9 RY016O9OCTP 4P 95 18 - 48 12.5 10 13 8 2 ¥19,300 M16 × 1.5 G9 RY016O9OCTB 2P 95 18 - 48 12.5 10 13 8 2 ¥19,300 Special Thread Taps Simple Inspection Tools M18 × 1.5 ⑦ G10 RY018OOOCTP 4P 100 20 - 51 14 11 14 8 2 ¥27,100 M18 × 1.5 G10 RY018OOOCTB 2P 100 20 - 51 14 11 14 8 2 ¥27,100 M20 × 1.5 G10 RY020OOOCTP 4P 105 20 - 50 15 12 15 8 2 ¥31,800 M20 × 1.5 G10 RY020OOOCTB 2P 105 20 - 50 15 12 15 8 2 ¥31,800 Pipe Taps Number of oil grooves: M  6 = 5, M8 = 6, M10 and larger = 8 ⑧ For M6 and smaller, external centers of 2 thread chamfer taps are removed. Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ JIS ※ = Specified Distribution Items. Made to order products. ⑥-8