Selection Chart Intro Z-PRO GP General Purpose MS Material Specific VUSP (LS) LS-SP LS-SP-PF LS-SP-K LS-SP LH LS-SP V MC-SP LS-PM-SP HSS-P COATING HSS-E HSS-E HSS-E HSS-E HSS-E COATING HSS-E HSS-P SP SL PO ST ROLL JIS JIS JIS JIS JIS JIS JIS JIS M 439 441 447 448 449 450 453 MF 439 442 448 449 451 453 UNC/UNF 443 UNS, 8, 12, 20, 32UN CARBIDE UNEF G (BSP) 446 Rp (BSPP) Rc (BSPT) NPT LONG NPTF NPSC, NPSM, NPSF BSW 444 EG(STI), M, MF, UNC/UNF HAND Pg TAPS TrS miniature Special threads Vc (m/min) EG (STI) P1 H 10÷25 I 5÷10 I 5÷10 I 5÷10 I 5÷10 H 10÷20 I 5÷10P2H10÷25H5÷10H5÷10H5÷10H5÷10H10÷20H5÷10 P3 H 10÷25 I 5÷10 I 5÷10 I 5÷10 I 5÷10 H 10÷20 I 5÷10 I 2÷10 P4 H 10÷20 I 5÷8 I 5÷10 I 5÷8 I 5÷8 H 10÷15 I 5÷8 H 2÷7 SPECIALTHREADS,GAUGES P5P6P7P8 H 5÷15 H 2÷7H2÷5I6÷12 M1 H 5÷15 I 6÷12 M2 I 5÷10 THREAD M3 MILLS K1 K2 I 10÷20 K3 K4 DIES N1 H 10÷30 I 5÷10 I 5÷10 I 5÷10 I 5÷10 I 10÷20 I 5÷10N2H10÷30I5÷10I5÷10I5÷10I5÷10I10÷20I5÷10 N3 I 10÷25 I 5÷10 I 5÷10 I 5÷10 I 5÷10 I 10÷20 I 5÷10 N4 I 10÷20 I 5÷10 I 5÷10 I 5÷10 I 5÷10 I 10÷20 I 5÷10 N5 CENTER S1 (<25 HRC) DRILLS S2 (<35 HRC) S3 (35 ÷ 45 HRC) S5 H (45 ÷ 55 HRC) Technical H (55 ÷ 63 HRC) info H 1st choice I suitable 434