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 TYPE:3 TYPE:4 Spiral Pointed Taps (for through hole) ③ Hand Taps Recommended class ④ Segment:1J Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe TYPE MSRP (mm) (mm) (mm) (mm) (mm) (mm) (mm) For Metric Threads M1 × 0.25 G4 SRZM41.0B1 1P 36 4.5 - 24 3 2.5 5 4 1 ¥5,510 Cemented Carbide Taps ⑤ M1.2 × 0.25 G4 SRZM41.2B1 1P 36 4.5 - 24 3 2.5 5 4 1 ¥5,030 M1.4 × 0.3 G4 SRZM41.4C1 1P 36 5.4 - 24 3 2.5 5 4 1 ¥4,490 M1.4 × 0.2 G3 SRZM31.4A1 1P 36 3.6 - 24 3 2.5 5 4 1 ¥6,740 M1.6 × 0.35 G4 SRZM41.6D1 1P 36 6.3 - 24 3 2.5 5 4 2 ¥4,320 Roll Taps M1.6 × 0.2 G3 SRZM31.6A1 1P 36 3.6 - 24 3 2.5 5 4 2 ¥6,540 ⑥ M1.7 × 0.35 G4 SRZM41.7D1 1P 36 6.3 - 24 3 2.5 5 4 2 ¥4,320 M2 × 0.4 G4 SRZM42.0E1 1P 42 7.2 - 27 3 2.5 5 4 3 ¥4,100 M2.5 × 0.45 G5 SRZM52.5F1 1P 46 8.1 14 29 3 2.5 5 4 4 ¥3,740 M2.6 × 0.45 G5 SRZM52.6F1 1P 46 8.1 14 29 3 2.5 5 4 4 ¥3,740 Special Thread Taps Simple Inspection Tools M3 × 0.5 G5 SRZM53.0G1 1P 46 9 14 26 4 3.2 6 4 4 ¥3,410 ⑦ M4 × 0.7 G6 SRZM64.0I1 1P 52 11 17 29 5 4 7 4 4 ¥3,490 M5 × 0.8 G6 SRZM65.0K1 1P 60 13 22 33 5.5 4.5 7 4 4 ¥3,720 M6 × 1 G6 SRZM66.0M1 1P 62 15 26 33 6 4.5 7 4 4 ¥3,980 For Unified Threads Pipe Taps ⑧ No.2-56UNC G4 SRZM4UN2E1 1P 42 8.1 - 27 3 2.5 5 4 3 ¥4,410 No.4-40UNC G5 SRZM5UN4H1 1P 46 9 14 25 4 3.2 6 4 4 ¥4,100 Number of oil grooves : Metric thread: M2.6 and smaller = non, M3 and larger = 2 Unified thread: No.4 and smaller = non Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ JIS ※ = Specified Distribution Items. Made to order products. ⑥-58