Overall Chamfer+ Thread Thread+Neck Shank Shank Size of Length of length full thread length length length dia. square square L ℓt ℓ ℓn ℓs Ds K ℓk SP Spiral Fluted Taps Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock (for blind hole) Spiral Fluted Taps (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes 1/2W12 P3 SPRW08S 2.5P 88 26 - 45 10.5 8 11 3 5 ○ 9/16W12 P3 SPRW09S 2.5P 95 26 - 48 12.5 10 13 3 5 △ 5/8W11 P3 SPRW10U 2.5P 95 26 - 48 12.5 10 13 3 5 ○ 3/4W10 P3 SPRW12V 2.5P 105 33 - 50 15 12 15 4 7 ○ (for through hole) Spiral Fluted Taps 7/8W9 P3 SPRW14W 2.5P 115 33 - 55 17 13 16 4 7 ○ 1 W8 P3 SPRW16X 2.5P 125 39 - 58 19 15 18 4 7 ○ 1 1/8W7 P4 SPSW18Y 2.5P 135 46 - 62 23 17 20 4 7 △ 1 1/4W7 P4 SPMSW20Y 2.5P 145 46 - 67 24 19 22 4 7 △ (for through hole) Spiral Pointed Taps 1 3/8W6 P4 SPMSW22Z 2.5P 155 52 - 71 28 21 24 4 7 △ 1 1/2W6 P4 SPMSW24Z 2.5P 165 52 - 76 30 23 26 4 7 △ 1 5/8W5 P4 SPMSW260 2.5P 175 59 - 81 32 26 30 4 7 △ 1 3/4W5 P4 SPMSW280 2.5P 180 59 - 83 35 26 30 4 7 △ For Screw Threads used on Sewing Machines Hand Taps Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes 3/32SM56 P1 SPPS06E 2.5P 46 8.1 14 29 3 2.5 5 2 3 △ 1/8SM40 P1 SPPS08H 2.5P 52 11 16 29 5 4 7 3 3 △ Carbide Taps Cemented 1/8SM44 P1 SPPS08G 2.5P 52 11 16 29 5 4 7 3 3 ○ 9/64SM40 P1 SPPS09H 2.5P 52 11 17 29 5 4 7 3 3 ○ 11/64SM40 P1 SPPS11H 2.5P 60 13 21 33 5.5 4.5 7 3 3 ○ 3/16SM28 P2 SPQS12K 2.5P 60 13 21 33 5.5 4.5 7 3 3 △ 3/16SM32 P2 SPQS12J 2.5P 60 13 21 33 5.5 4.5 7 3 3 △ Roll Taps 7/32SM32 P2 SPQS14J 2.5P 62 15 26 33 6 4.5 7 3 3 △ 15/64SM28 P2 SPQS15K 2.5P 62 15 26 33 6 4.5 7 3 3 △ 1/4SM24 P2 SPQS16M 2.5P 62 15 26 33 6 4.5 7 3 3 △ 1/4SM40 P1 SPPS16H 2.5P 62 8.6 26 33 6 4.5 7 3 4 △ Simple Inspection Tools Special Thread Taps Pipe Taps Thread Mills Dies Center Drills Centering Tools JIS ◎=Standard ○=Semi standard △=Made to order SP-10 For improvement, spec may change without advance notice. 327