⑥ Roll Tap Series Overall length L Thread length ℓ Thread + Neck length ℓn Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk JIS N-RZ Roll Taps for Steels Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe TYPE MSRP Spiral Fluted Taps (for blind hole) (mm) (mm) (mm) (mm) (mm) (mm) (mm) ① M12 × 1.25 G8 NRZM8012NB 2P 82 26 - 42 8.5 6.5 9 8 6 ¥4,270 ※ M12 × 1.25 G9 NRZM9012NP 4P 82 26 - 42 8.5 6.5 9 8 6 ¥4,270 ※ M12 × 1.25 G9 NRZM9012NB 2P 82 26 - 42 8.5 6.5 9 8 6 ¥4,270 ※ M12 × 1 G7 NRZM7012MP 4P 82 26 - 42 8.5 6.5 9 8 6 ¥5,000 ※ Spiral Fluted Taps (for through hole) M12 × 1 G7 NRZM7012MB 2P 82 26 - 42 8.5 6.5 9 8 6 ¥5,000 ※ ② M14 × 2 G9 NRZM9014QP 4P 88 26 - 45 10.5 8 11 8 6 ¥5,830 ※ M14 × 2 G9 NRZM9014QB 2P 88 26 - 45 10.5 8 11 8 6 ¥5,830 ※ M14 × 2 G10 NRZM0014QP 4P 88 26 - 45 10.5 8 11 8 6 ¥5,830 ※ M14 × 2 G10 NRZM0014QB 2P 88 26 - 45 10.5 8 11 8 6 ¥5,830 ※ Spiral Pointed Taps (for through hole) ③ M14 × 1.5 G9 NRZM9014OP 4P 88 26 - 45 10.5 8 11 8 6 ¥5,830 ※ M14 × 1.5 G9 NRZM9014OB 2P 88 26 - 45 10.5 8 11 8 6 ¥5,830 ※ M14 × 1 G8 NRZM8014MP 4P 88 26 - 45 10.5 8 11 8 6 ¥6,750 ※ M14 × 1 G8 NRZM8014MB 2P 88 26 - 45 10.5 8 11 8 6 ¥6,750 ※ M16 × 2 ¥7,770 ※ Hand Taps G9 NRZM9016QP 4P 95 26 - 48 12.5 10 13 8 6 ④ M16 × 2 G9 NRZM9016QB 2P 95 26 - 48 12.5 10 13 8 6 ¥7,770 ※ M16 × 2 G10 NRZM0016QP 4P 95 26 - 48 12.5 10 13 8 6 ¥7,770 ※ M16 × 2 G10 NRZM0016QB 2P 95 26 - 48 12.5 10 13 8 6 ¥7,770 ※ M16 × 1.5 G9 NRZM9016OP 4P 95 26 - 48 12.5 10 13 8 6 ¥7,770 ※ Cemented Carbide Taps M16 × 1.5 G9 NRZM9016OB 2P 95 26 - 48 12.5 10 13 8 6 ¥7,770 ※ ⑤ M16 × 1 G8 NRZM8016MP 4P 95 26 - 48 12.5 10 13 8 6 ¥9,280 ※ M16 × 1 G8 NRZM8016MB 2P 95 26 - 48 12.5 10 13 8 6 ¥9,280 ※ M18 × 1.5 G10 NRZM0018OP 4P 100 33 - 51 14 11 14 8 6 ¥10,400 ※ M20 × 1.5 G9 NRZM9020OP 4P 105 33 - 50 15 12 15 8 7 ¥14,300 ※ Roll Taps M20 × 1.5 ¥14,300 ※ ⑥ G9 NRZM9020OB 2P 105 33 - 50 15 12 15 8 7 M20 × 1.5 G10 NRZM0020OP 4P 105 33 - 50 15 12 15 8 7 ¥14,300 ※ M20 × 1.5 G10 NRZM0020OB 2P 105 33 - 50 15 12 15 8 7 ¥14,300 ※ For Unified Threads No.4-40UNC G5 NRZM5UN4HB 2P 46 9 14 25 4 3.2 6 4 4 ¥1,840 ※ Special Thread Taps Simple Inspection Tools ⑦ No.6-32UNC G6 NRZM6UN6JB 2P 52 11 17 27 5 4 7 4 4 ¥1,710 ※ 5/16-18UNC G7 NRZM7U05OP 4P 70 19 - 36 6.2 5 8 6 6 ¥2,720 ※ 5/16-18UNC G7 NRZM7U05OB 2P 70 19 - 36 6.2 5 8 6 6 ¥2,720 ※ 3/8-24UNF G7 NRZM7U06MP 4P 75 23 - 38 7 5.5 8 6 6 ¥3,490 ※ Pipe Taps 3/8-24UNF G7 NRZM7U06MB 2P 75 23 - 38 7 5.5 8 6 6 ¥3,490 ※ ⑧ 7/16-14UNC G8 NRZM8U07QP 4P 82 26 - 42 8.5 6.5 9 8 6 ¥4,900 ※ 7/16-14UNC G8 NRZM8U07QB 2P 82 26 - 42 8.5 6.5 9 8 6 ¥4,900 ※ 7/16-20UNF G8 NRZM8U07NP 4P 82 26 - 42 8.5 6.5 9 8 6 ¥4,900 ※ 7/16-20UNF G8 NRZM8U07NB 2P 82 26 - 42 8.5 6.5 9 8 6 ¥4,900 ※ Thread Mills Premium Thread Mills 1/2-13UNC G8 NRZM8U08RP 4P 88 26 - 45 10.5 8 11 8 6 ¥5,200 ※ ⑨ 1/2-13UNC G8 NRZM8U08RB 2P 88 26 - 45 10.5 8 11 8 6 ¥5,200 ※ 1/2-20UNF G8 NRZM8U08NP 4P 88 26 - 45 10.5 8 11 8 6 ¥5,200 ※ 1/2-20UNF G8 NRZM8U08NB 2P 88 26 - 45 10.5 8 11 8 6 ¥5,200 ※  umber of oil grooves : Metric thread : M2.6 and smaller=non, N Dies M3 〜 M7=4, M8=3, M10 and larger=4 ⑩ For M6 and smaller, external centers of 2 thread chamfer taps are removed. Center Drills Centering Tools ⑪ JIS ⑥-17 ※ = Specified Distribution Items. Made to order products.