⑦ Special Thread Taps / Simple Inspection Tools Overall length L Thread length ℓ Thread + Neck ℓn length Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk JIS AL-SP STI Spiral Fluted Taps for Aluminum Materials (for Helical Coil Wire Screw Thread Inserts) Basic No. of TYPE L ℓ ℓn ℓs Ds K ℓk Spiral Fluted Taps (for blind hole) Size Class Code Chamfer major dia MSRP (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes ① (mm) M14 × 2 Ⅰb SW014Q1LEN 2.5P 16.598 100 33 - 51 14 11 14 3 2 ¥7,270 ※ M14 × 1.5 Ⅰb SW014O1LEN 2.5P 15.948 95 26 - 48 12.5 10 13 3 2 ¥7,270 ※ M16 × 2 Ⅰb SW016Q1LEN 2.5P 18.598 105 33 - 50 15 12 15 4 3 ¥10,500 M16 × 1.5 Ⅰb SW016O1LEN 2.5P 17.948 100 33 - 51 14 11 14 4 2 ¥10,500 ※ Spiral Fluted Taps (for through hole) M18 × 2.5 ② Ⅰb SW018R1LEN 2.5P 21.248 115 33 - 55 17 13 16 4 3 ¥17,300 ※ M18 × 1.5 Ⅰb SW018O1LEN 2.5P 19.948 105 33 - 50 15 12 15 4 3 ¥17,300 ※ M20 × 2.5 Ⅰb SW020R1LEN 2.5P 23.248 120 39 - 55 19 15 18 4 3 ¥20,600 M20 × 1.5 Ⅰb SW020O1LEN 2.5P 21.948 115 33 - 55 17 13 16 4 3 ¥20,600 ※ M22 × 2.5 Ⅰb ¥26,900 ※ Spiral Pointed Taps (for through hole) SW022R1LEN 2.5P 25.248 125 39 - 58 19 15 18 4 3 ③ M24 × 3 Ⅰb SW024S1LEN 2.5P 27.897 135 46 - 62 23 17 20 4 3 ¥33,200 Hand Taps ④ Cemented Carbide Taps ⑤ Roll Taps ⑥ Special Thread Taps Simple Inspection Tools ⑦ Pipe Taps ⑧ Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ JIS ⑦-11 ※ = Specified Distribution Items. Made to order products.