Machine Taps <strong>HAHN</strong>REITER HSS-E BSW Whitworth Coarse Threads BS 84 Dimensions DIN 2184 part 1, Reduced shank d p Ø l1l2 l2 d2 a Gg/1” mm SSP** 5/16 - 18 07,94 90 22 6,0 4,9 6,50 7/16 - 14 11,11 100 22 18 8,0 6,2 9,30 1/2 - 12 12,70 110 25 18 9,0 7,0 10,50 5/8 - 11 15,88 110 25 20 12,0 9,0 13,50 3/4 - 10 19,05 125 30 25 14,0 11,0 16,50 7/8 - 9 22,23 140 34 28 18,0 14,5 19,25 1 - 8 25,40 160 36 32 20,0 16,0 22,00 1.1/8 - 7 28,58 180 40 22,0 18,0 24,75 1.1/4 - 7 31,75 180 40 22,0 18,0 27,75 1.3/8 - 6 34,93 200 45 28,0 22,0 30,50 1.1/2 - 6 38,10 200 45 32,0* 24,0 33,50 1.3/4 - 5 44,45 220 56 36,0 29,0 39,00 2 - 4,5 50,80 250 63 40,0 32,0 44,50 ** SSP = quick spiral Catalogue Number Name Tolerance Chamfer form Chamfer lengths, threads For holes Application Surface finish Variation 115 300 115 305 115 318 115 326 115 381 Hahnreiter HC Dulofix Spiralo 15 Spiralo 35 Gussfix C B C C C 2-3 4-5 2-3 2-3 2-3 Short-chip Free cutting Grey materials materials cast
Drill-Ø for Taper Pipe Threads <strong>HAHN</strong>REITER HSS-E NPT American Taper Pipe Thread 1) Drill-Ø Ø“ Gg/1“ Ø Im 2) cyl. Bz taper BK TPI NPT 1/16 27 7,84 9,20 6,20 6,39 NPT 1/8 27 10,18 9,30 8,50 8,74 NPT 1/4 18 13,54 13,50 11,10 11,36 NPT 3/8 18 16,98 13,90 14,55 14,80 NPT 1/2 14 21,14 18,10 18,00 18,32 NPT 3/4 14 26,49 18,60 23,25 23,67 NPT 1 11,5 33,14 22,30 29,20 29,69 NPT 1.1/4 11,5 41,90 22,80 37,95 38,45 NPT 1.1/2 11,5 47,97 22,80 44,00 44,52 NPT 2 11,5 60,00 22,80 56,00 56,56 1) taper BKFor mass production preparation of a taper core hole is recommended. NPTF 1/16 27 7,84 9,20 6,20 6,42 NPTF 1/8 27 10,18 9,30 8,50 8,76 NPTF 1/4 18 13,54 13,50 11,00 11,40 NPTF 3/8 18 16,98 13,90 14,50 14,84 NPTF 1/2 14 21,14 18,10 17,80 18,33 NPTF 3/4 14 26,49 18,60 23,10 23,68 NPTF 1 11,5 33,14 22,30 29,10 29,72 NPTF 1.1/4 11,5 41,90 22,80 37,80 38,48 NPTF 1.1/2 11,5 47,97 22,80 43,90 44,55 NPTF 2 11,5 60,00 22,80 55,90 56,59 Rc taper Whitworth Pipe-Thread, Taper 1:16, accord. to ISO 7/1 and BS 21 Drill-Ø Gg/1“ Ø-Nominal Gauge plane of tap cylindrical taper 3) TPI Lm Bz BK Rc 1/8 28 9,728 10,10 8,2 8,57 Rc 1/4 19 13,157 15,00 11,0 11,45 Rc 3/8 19 16,662 15,40 14,5 14,95 Rc 1/2 14 20,955 20,40 18,0 18,63 Rc 3/4 14 26,441 21,70 23,4 24,12 Rc 1 11 33,249 26,00 29,5 30,29 Rc 1.1/4 11 41,910 28,30 38,0 38,95 Rc 1.1/2 11 47,803 28,30 43,9 44,85 Rc 2 11 59,614 32,60 55,5 56,66 Rc 2.1/2 11 75,184 37,10 70,9 72,23 Rc 3 11 87,884 40,20 83,4 84,93 Rc 4 11 113,030 46,20 108,2 110,07 3) For mass production preparation of a taper core hole is recommended. W Cylindrical Whitworth Thread according to DIN 477 P Core-Ø Nut Thread Minor-Ø Drill-Ø Gg/1“ / TPI Min. 4) Max. ØB W 21,8 x 1/14 14 19,496 20,066 19,75 W 24,32 x 1/14 14 22,016 22,586 22,25 W 1 x 1/8 8 21,339 22,152 22,00 W Taper Whitworth Thread according to DIN 477 Drill-Ø P Gg/1“/ TPI Gauge plane of tap cylindrical taper 5) Lm Max. ØB W 19,8 x 1/14 keg. 14 24,2 14,7 16,8 W 28,8 x 1/14 keg. 14 29,2 22,7 25,4 W 31,3 x 1/14 keg. 14 29,2 25,2 27,9 4) Minor-Ø of nut thread accord. to DIN 477 part 1 5) For mass production preparation of a taper core hole is recommended. NPTF American Taper Pipe Thread 60 UK +44 (0)1376 347566 Email: enquiries@fenntool.co.uk Website: www.fenntool.com Ireland +353 (0)45 877740 Drill-Ø Ø“ Gg/1“ Ø Im 2) cyl. Bz taper BK TPI 2) Gauge length Lm of <strong>HAHN</strong>REITER standard taps covers L1 (screwing by hand) and L3 (screwing by means of wrenching tools) accord. to ANSI B1.20.1 and ANSI B1.20.3 and chamfer length of 2-3 threads. Blind holes have to machined 1-2 threads deeper for safety.
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