SERIES 46Y_NFR, 47Y_NFS (NPTF) SOLID CARBIDE THREAD MILLS - FOR EXTERNAL OR INTERNAL NPTF THREAD Coolant Int. Thread Ext. Thread L1P P30º 30º D2 D1 15º 90º Taper 1:16 L2 D2 Pitch Shank D2 No. of Cutter Number (TPI) Standard Size/Style Thread Effective L1 L2 46Y-27NFR6RA100 IN2005 27 1/8 .250" Cylindrical 0.250 3 0.390 2.5 46Y-27NFR7RB110 IN2005 27 1/8 .250" Cylindrical 0.250 3 0.430 2.5 46Y-18NFR7RA150 IN2005 18 1/4-3/8 .312" Cylindrical 0.312 3 0.580 2.5 47Y-14NFS4RA210 IN2005 14 1/2-3/4 .500" Cylindrical 0.500 4 0.820 3.5 47Y-14NFS6RB230 IN2005 14 1/2-3/4 .500" Cylindrical 0.500 4 0.890 4 47Y-11NFS6RA280 IN2005 12 1-2 .625" Cylindrical 0.625 4 1.090 4 47Y-11NFS7RB300 IN2005 12 1-2 .625" Cylindrical 0.625 4 1.170 4 47Y-08NFS7RA400 IN2005 08 >=2-1/2 .750" Cylindrical 0.750 4 1.560 4 Operating guidelines on page 704. 551