
Selection Chart Intro Thread Mills PRML PRML TI HF COATING HF COATING CARBIDE CARBIDE SP SL PO ST ROLL YMW YMW M 597 599 MF 597 599 UNC/UNF 597 599 UNS, 8, 12, 20, 32UN CARBIDE UNEF G (BSP) Rp (BSPP) Rc (BSPT) NPT LONG NPTF NPSC, NPSM, NPSF BSW EG(STI), M, MF, UNC/UNF Pg HAND Tr TAPS S miniature Special threads Vc (m/min) P1 H EG (STI) P2 H P3 H P4 H P5 H SPECIAL P6 H THREADS, P7 H GAUGES P8 M1 H M2 H THREAD M3 H MILLS K1 H K2 H K3 K4 N1 DIES N2 N3 N4 N5 CENTER S1 (<25 HRC) S2 (<35 HRC) DRILLS S3 (35 ÷ 45 HRC) S5 H H (45 ÷ 55 HRC) Technical H (55 ÷ 63 HRC) info H 1st choice I suitable 594