Spiral Fluted Tap Series SP Spiral Fluted Taps Spiral Fluted Taps (for blind hole) Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes 1/4-20UNC P2 SPQU04N 2.5P 62 15 26 33 6 4.5 7 3 3 ◎ 1/4-28UNF P2 SPQU04K 2.5P 62 15 26 33 6 4.5 7 3 3 ○ 1/4-32UNEF P2 SPQU04J 2.5P 62 15 26 33 6 4.5 7 3 3 △ Spiral Fluted Taps (for through hole) 5/16-18UNC P2 SPQU05O 2.5P 70 19 - 36 6.2 5 8 3 5 ◎ 5/16-24UNF P2 SPQU05M 2.5P 70 19 - 36 6.2 5 8 3 5 ○ 5/16-32UNEF P2 SPQU05J 2.5P 70 19 - 36 6.2 5 8 3 5 △ 3/8-16UNC P2 SPQU06P 2.5P 75 23 - 38 7 5.5 8 3 5 ◎ Spiral Pointed Taps (for through hole) 3/8-24UNF P2 SPQU06M 2.5P 75 23 - 38 7 5.5 8 3 5 ○ 7/16-14UNC P3 SPRU07Q 2.5P 82 26 - 42 8.5 6.5 9 3 5 ○ 7/16-20UNF P2 SPQU07N 2.5P 82 26 - 42 8.5 6.5 9 3 5 ○ 1/2-13UNC P3 SPRU08R 2.5P 88 26 - 45 10.5 8 11 3 5 ○ 1/2-20UNF P2 SPQU08N 2.5P 88 26 - 45 10.5 8 11 3 5 ○ Hand Taps 9/16-12UNC P3 SPRU09S 2.5P 95 26 - 48 12.5 10 13 3 5 △ 9/16-18UNF P2 SPQU09O 2.5P 95 26 - 48 12.5 10 13 3 5 ○ 9/16-24UNEF P2 SPQU09M 2.5P 95 26 - 48 12.5 10 13 3 5 △ 5/8-11UNC P3 SPRU10U 2.5P 95 26 - 48 12.5 10 13 3 5 ○ Cemented Carbide Taps 5/8-18UNF P2 SPQU10O 2.5P 95 26 - 48 12.5 10 13 3 5 ○ 5/8-24UNEF P2 SPQU10M 2.5P 95 26 - 48 12.5 10 13 3 5 △ 3/4-10UNC P3 SPRU12V 2.5P 105 33 - 50 15 12 15 4 7 ○ 3/4-16UNF P3 SPRU12P 2.5P 105 33 - 50 15 12 15 4 7 ○ Roll Taps 3/4-20UNEF P2 SPQU12N 2.5P 105 33 - 50 15 12 15 4 7 △ 7/8-9UNC P3 SPRU14W 2.5P 115 33 - 55 17 13 16 4 7 ○ 7/8-14UNF P3 SPRU14Q 2.5P 115 33 - 55 17 13 16 4 7 ○ 7/8-20UNEF P2 SPQU14N 2.5P 115 33 - 55 17 13 16 4 7 △ 1 -8UNC P3 SPRU16X 2.5P 125 39 - 58 19 15 18 4 7 ○ Special Thread Taps Simple Inspection Tools 1 -12UNF P3 SPRU16S 2.5P 125 39 - 58 19 15 18 4 7 △ 1 -14UNS P3 SPRU16Q 2.5P 125 39 - 58 19 15 18 4 7 △ 1 -20UNEF P2 SPQU16N 2.5P 125 39 - 58 19 15 18 4 7 △ 1 1/8-7UNC P4 SPSU18Y 2.5P 135 46 - 62 23 17 20 4 7 △ Pipe Taps 1 1/8-12UNF P3 SPRU18S 2.5P 135 46 - 62 23 17 20 4 7 △ 1 1/4-7UNC P4 SPMSU20Y 2.5P 145 46 - 67 24 19 22 4 7 △ 1 1/4-8UN P3 SPMRU20X 2.5P 145 46 - 67 24 19 22 4 7 △ 1 1/4-12UNF P3 SPMRU20S 2.5P 145 46 - 67 24 19 22 4 7 △ Thread Mills 1 3/8-6UNC P4 SPMSU22Z 2.5P 155 52 - 71 28 21 24 4 7 △ 1 3/8-8UN P3 SPMRU22X 2.5P 155 52 - 71 28 21 24 4 7 △ 1 3/8-12UNF P3 SPMRU22S 2.5P 155 52 - 71 28 21 24 4 7 △ 1 1/2-6UNC P4 SPMSU24Z 2.5P 165 52 - 76 30 23 26 4 7 △ Dies 1 1/2-12UNF P3 SPMRU24S 2.5P 165 52 - 76 30 23 26 4 7 △ 1 3/4-5UNC P4 SPMSU280 2.5P 180 59 - 83 35 26 30 4 7 △ 1 3/4-12UN P3 SPMRU28S 2.5P 180 59 - 83 35 26 30 4 7 △ For Whitworth Threads Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock Center Drills (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes 1/8W40 P1 SPPW02H 2.5P 52 11 17 29 5 4 7 3 3 ○ 5/32W32 P2 SPQW2HJ 2.5P 52 11 17 29 5 4 7 3 3 △ 3/16W24 P2 SPQW03M 2.5P 60 13 21 33 5.5 4.5 7 3 3 ○ 7/32W24 P2 SPQW3HM 2.5P 62 15 26 33 6 4.5 7 3 3 △ Centering Tools 1/4W20 P2 SPQW04N 2.5P 62 15 26 33 6 4.5 7 3 3 ○ 5/16W18 P2 SPQW05O 2.5P 70 19 - 36 6.2 5 8 3 5 ○ 3/8W16 P2 SPQW06P 2.5P 75 23 - 38 7 5.5 8 3 5 ○ 7/16W14 P3 SPRW07Q 2.5P 82 26 - 42 8.5 6.5 9 3 5 △ JIS SP-9 ◎=Standard ○=Semi standard △=Made to order 326 For improvement, spec may change without advance notice.