9 C123 2-Flute HSS-E-PM Slot End Mill, Bright Finish Short cut length, 2-flute design provides high rigidity. Suitable for milling shallow slots and ramping. The accurate diameter means the tools are designed for milling standard keyway slots to a P9 tolerance. Versatile and can be used in mild steels, non-ferrous materials and medium strength titanium alloys. HSS-EPM N NOF2 l g 30° 12° DC Bright e8 P9 Workpiece material group suitability, starting values for cutting speed (m/min) and Alpha Code. Tables with feed per tooth and correction factors can be found starting from page 194. P1.1 P1.2 P1.3 P2.1 P2.2 P3.1 P3.2 P4.1 M1.1 M1.2 M2.1 M2.2 K1.1 K1.2 53 D 59 D 61 D 45 D 40 D 37 D 30 C 22 C 34 D 29 D 31 D 25 C 30 D 22 D K1.3 K2.1 K2.2 K2.3 K3.1 K3.2 K3.3 K4.1 K4.2 K4.3 K4.4 K4.5 K5.1 K5.2 17 D 55 D 45 D 36 C 49 D 37 D 30 B 45 C 34 C 25 C 22 B 18 B 51 C 39 C K5.3 N1.1 N1.2 N1.3 N2.1 N2.2 N2.3 N3.1 N3.2 N3.3 N4.1 S1.1 S1.2 S2.1 30 C 95 F 71 E 48 E 48 D 43 D 31 D 50 D 29 D 15 D 50 D 30 C 25 C 20 B S3.1 S4.1 15 B 12 B DCON MS tolerance h6. Product DC DC DCON MS APMX OAL NOF LU DN [inch] [mm] [mm] [mm] [mm] [mm] [mm] C1231/16 1) 1/16 1.59 6.00 7.00 51.0 2 – – C1232.0 – 2.00 6.00 7.00 51.0 2 – – C1232.5 – 2.50 6.00 8.00 52.0 2 – – C1233.0 – 3.00 6.00 8.00 52.0 2 – – C1231/8 1) 1/8 3.18 6.00 10.00 54.0 2 – – C1233.5 – 3.50 6.00 10.00 54.0 2 – – C1235/32 1) 5/32 3.97 6.00 11.00 55.0 2 – – C1234.0 – 4.00 6.00 11.00 55.0 2 – – C1234.5 – 4.50 6.00 11.00 55.0 2 – – C1233/16 1) 3/16 4.76 6.00 13.00 57.0 2 – – C1235.0 – 5.00 6.00 13.00 57.0 2 – – C1235.5 – 5.50 6.00 13.00 57.0 2 – – C1236.0 – 6.00 6.00 13.00 57.0 2 – – C1231/4 1) 1/4 6.35 10.00 16.00 66.0 2 – – C1236.5 – 6.50 10.00 16.00 66.0 2 – – C1237.0 – 7.00 10.00 16.00 66.0 2 – – C1237.5 – 7.50 10.00 16.00 66.0 2 – – C1235/16 1) 5/16 7.94 10.00 19.00 69.0 2 – – C1238.0 – 8.00 10.00 19.00 69.0 2 – – C1238.5 – 8.50 10.00 19.00 69.0 2 – – C1239.0 – 9.00 10.00 19.00 69.0 2 – – C1239.5 – 9.50 10.00 19.00 69.0 2 – – C1233/8 1) 3/8 9.52 10.00 22.00 72.0 2 31.50 9.50 C12310.0 – 10.00 10.00 22.00 72.0 2 31.50 9.50 C12311.0 – 11.00 12.00 22.00 79.0 2 – – 130