Selection Chart Intro GP General Purpose MP Multi Purpose GP General Purpose HT Pg 6000 NT MS+TR MS+RS HPsRZ SL Tr SL LH Tr HSS-E HSS HSS-E HSS-E HSS-E HSS-E COATING HSS-E HSS-E SP SL PO ST ROLL DIN DIN JIS JIS JIS JIS JIS JIS M 547 549 MF 549 UNC/UNF UNS, 8, 12, 20, 32UN CARBIDE UNEF G (BSP) Rp (BSPP) Rc (BSPT) NPT LONG NPTF NPSC, NPSM, NPSF BSW 550 EG(STI), M, MF, UNC/UNF HAND Pg 546 TAPS TrS miniature 554 555551552553 Special threads Vc (m/min) EG (STI) P1 I 5÷10 H 5÷10 H 5÷10P2H5÷10H5÷10H5÷10 H 15÷30 H ≤5 H ≤5H15÷30H≤5H≤5 P3 I 5÷10 H 15÷25 P4 I 5÷10 H 15÷25 SPECIALTHREADS,GAUGES P5P6P7P8 H 3÷7 H 3÷7 H 10÷25 M1 H 3÷7 H 3÷7 H 10÷25 M2 H 10÷25 THREAD M3 MILLS K1 I 5÷10 K2 I 5÷10 K3 I 5÷10 K4 DIES N1N2 I 5÷10 H ≤5 H ≤10 I 10÷45H≤5H≤10I10÷45 N3 I 5÷10 I ≤5 H ≤10 N4 I 5÷10 H ≤5 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 542