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End Mills / 278N

Solid Carbide TuffCut® XT 5 Flute End Mill
Designed specifically for specific applications in steels, stainless steels, special alloys, and cast irons.
  • 5 Flute
  • Neck relief
  • ALtima® Blaze coating, B=ALtima® Blaze (ALCrN) coated
  • Center cutting
  • Long and extra long flute lengths
  • 40° Helix angle
  • Corner radius options
  • Weldon shank flat options
  • Enhanced corner protection
  • Whisper blend transition between OD and Neck

Materials

  • Steel
  • Stainless steel
  • Cast iron
  • Super-alloys and titanium

Applications

  • High Efficiency Milling
  • Slotting
  • Traditional Roughing
  • Finishing

Series Attributes

Downloads

Product Range

Tool No. EDP Diameter (D/D1) Shank Diameter (D2) Overall Length (L1) Flute Length (L2) Neck Length (L3) Corner Radius Coating Shank Type
.1181 278 0300N3-0.25RB 27820 3mm 6mm 57mm 8mm 10mm 0.25mm ALtima® Blaze Straight
.1181 278 0300N3-0.5RB 27822 3mm 6mm 57mm 8mm 10mm 0.5mm ALtima® Blaze Straight
.1250 27812530N1.250B 20189 1/8 4/8 2-1/2 3/4 1.250 ALtima® Blaze Straight
.1250 27812534N1.250B 20191 1/8 1/8 2-1/2 3/4 1.250 0.03 ALtima® Blaze Straight
.1575 278 0400N3-0.25RB 27824 4mm 6mm 57mm 11mm 13mm 0.25mm ALtima® Blaze Straight
.1575 278 0400N3-0.5RB 27826 4mm 6mm 57mm 11mm 13mm 0.5mm ALtima® Blaze Straight
.1968 278 0500N3-0.25RB 27828 5mm 6mm 57mm 13mm 16mm 0.25mm ALtima® Blaze Straight
.1968 278 0500N3-0.5RB 27830 5mm 6mm 57mm 13mm 16mm 0.5mm ALtima® Blaze Straight
.2362 278 0600N3-0.25RB 27832 6mm 6mm 57mm 13mm 19mm 0.25mm ALtima® Blaze Straight
.2362 278 0600N3-0.5RB 27834 6mm 6mm 57mm 13mm 19mm 0.5mm ALtima® Blaze Straight
.2362 278 0600N3-1.0RB 27836 6mm 6mm 57mm 13mm 19mm 1mm ALtima® Blaze Straight
.2362 278 0600N3-0.5RBW 20711 6mm 6mm 57mm 13mm 19mm 0.5mm ALtima® Blaze Weldon
.2500 27825022NB 37011 1/4 1/4 4 3/4 2-1/8 0.015 ALtima® Blaze Straight
.2500 27825024NB 37012 1/4 1/4 4 3/4 2-1/8 0.03 ALtima® Blaze Straight
.3150 278 0800N3-0.25RB 27837 8mm 8mm 63mm 19mm 25mm 0.25mm ALtima® Blaze Straight
.3150 278 0800N3-0.5RB 27838 8mm 8mm 63mm 19mm 25mm 0.5mm ALtima® Blaze Straight
.3150 278 0800N3-1.0RB 27840 8mm 8mm 63mm 19mm 25mm 1mm ALtima® Blaze Straight
.3150 278 0800N3-2.0RB 27842 8mm 8mm 63mm 19mm 25mm 2mm ALtima® Blaze Straight
.3150 278 0800N3-1.5RB 20132 8mm 8mm 63mm 19mm 25mm 1.5mm ALtima® Blaze Straight
.3150 278 0800N3-0.5RBW 20257 8mm 8mm 63mm 19mm 25mm 0.5mm ALtima® Blaze Weldon
.3150 278 0800N3-1.0RBW 20713 8mm 8mm 63mm 19mm 25mm 1mm ALtima® Blaze Weldon
.3750 27837522NB 37023 3/8 3/8 4 1 2-1/8 0.015 ALtima® Blaze Straight
.3750 27837524NB 37024 3/8 3/8 4 1 2-1/8 0.03 ALtima® Blaze Straight
.3750 27837522NBW 14833 3/8 3/8 4 1 2-1/8 0.015 ALtima® Blaze Weldon
.3750 27837504N1.250B 19834 3/8 3/8 2-1/2 1/2 1-1/4 0.03 ALtima® Blaze Straight
.3937 278 1000N3-0.5RB 27844 10mm 10mm 72mm 22mm 31mm 0.5mm ALtima® Blaze Straight
.3937 278 1000N3-1.0RB 27846 10mm 10mm 72mm 22mm 31mm 1mm ALtima® Blaze Straight
.3937 278 1000N3-2.0RB 27848 10mm 10mm 72mm 22mm 31mm 2mm ALtima® Blaze Straight
.3937 278 1000N3-0.5RBW 20671 10mm 10mm 72mm 22mm 31mm 0.5mm ALtima® Blaze Weldon
.3937 278 1000N3-1.0RBW 20714 10mm 10mm 72mm 22mm 31mm 1mm ALtima® Blaze Weldon
.4724 278 1200N3-0.5RB 27850 12mm 12mm 84mm 26mm 38mm 0.5mm ALtima® Blaze Straight
.4724 278 1200N3-1.0RB 27852 12mm 12mm 84mm 26mm 38mm 1mm ALtima® Blaze Straight
.4724 278 1200N3-1.5RB 27854 12mm 12mm 84mm 26mm 38mm 1.5mm ALtima® Blaze Straight
.4724 278 1200N3-2.5RB 27856 12mm 12mm 84mm 26mm 38mm 2.5mm ALtima® Blaze Straight
.4724 278 1200N3-3.0RB 27858 12mm 12mm 84mm 26mm 38mm 3mm ALtima® Blaze Straight
.4724 278 1200N3-4.0RB 27860 12mm 12mm 84mm 26mm 38mm 4mm ALtima® Blaze Straight
.4724 278 1200N3-1.0RBW 77947 12mm 12mm 84mm 26mm 38mm 1mm ALtima® Blaze Weldon
.5000 27850022NB 37037 1/2 1/2 4 1-1/4 2-1/8 0.015 ALtima® Blaze Straight
.5000 27850024NB 37038 1/2 1/2 4 1-1/4 2-1/8 0.03 ALtima® Blaze Straight
.5000 27850022NBW 14834 1/2 1/2 4 1-1/4 2-1/8 0.015 ALtima® Blaze Weldon
.5000 27850024NBW 18267 1/2 1/2 4 1-1/4 2-1/8 0.03 ALtima® Blaze Weldon
.6250 27862522NB 37050 5/8 5/8 4 1-1/2 2-1/8 0.015 ALtima® Blaze Straight
.6250 27862524NB 37051 5/8 5/8 4 1-1/2 2-1/8 0.03 ALtima® Blaze Straight
.6250 27862524NBW 14693 5/8 5/8 4 1-1/2 2-1/8 0.03 ALtima® Blaze Weldon
.6299 278 1600N3-0.5RB 27870 16mm 16mm 100mm 35mm 50mm 0.5mm ALtima® Blaze Straight
.6299 278 1600N3-1.0RB 27872 16mm 16mm 100mm 35mm 50mm 1mm ALtima® Blaze Straight
.6299 278 1600N3-1.5RB 27874 16mm 16mm 100mm 35mm 50mm 1.5mm ALtima® Blaze Straight
.6299 278 1600N3-2.5RB 27876 16mm 16mm 100mm 35mm 50mm 2.5mm ALtima® Blaze Straight
.6299 278 1600N3-3.0RB 27878 16mm 16mm 100mm 35mm 50mm 3mm ALtima® Blaze Straight
.6299 278 1600N3-4.0RB 27880 16mm 16mm 100mm 35mm 50mm 4mm ALtima® Blaze Straight
.6299 278 1600N4-1.0RB 27871 16mm 16mm 117mm 35mm 65mm 1mm ALtima® Blaze Straight
.6299 278 1600N4-3.0RB 27873 16mm 16mm 117mm 35mm 65mm 3mm ALtima® Blaze Straight
.6299 278 1600N5-1.0RB 27875 16mm 16mm 133mm 35mm 82mm 1mm ALtima® Blaze Straight
.6299 278 1600N5-3.0RB 27877 16mm 16mm 133mm 35mm 82mm 3mm ALtima® Blaze Straight
.6299 278 1600N3-1.0RBW 77948 16mm 16mm 100mm 35mm 50mm 1mm ALtima® Blaze Weldon
.6299 278 1600N4-1.0RBW 77949 16mm 16mm 117mm 35mm 65mm 1mm ALtima® Blaze Weldon
.6299 278 1600N3-0.5RBW 19844 16mm 16mm 100mm 35mm 50mm 0.5mm ALtima® Blaze Weldon
.6299 278 1600N3-3.0RBW 19845 16mm 16mm 100mm 35mm 50mm 3mm ALtima® Blaze Weldon
.6299 278 1600N3-4.0RBW 20705 16mm 16mm 100mm 35mm 50mm 4mm ALtima® Blaze Weldon
.7500 27875022NB 37063 3/4 3/4 5 1-7/8 3 0.015 ALtima® Blaze Straight
.7500 27875024NB 37064 3/4 3/4 5 1-7/8 3 0.03 ALtima® Blaze Straight
.7500 27875024NBW 19430 3/4 3/4 5 1-7/8 3 0.03 ALtima® Blaze Weldon
.7874 278 2000N3-1.0RB 27890 20mm 20mm 112mm 40mm 62mm 1mm ALtima® Blaze Straight
.7874 278 2000N3-3.0RB 27892 20mm 20mm 112mm 40mm 62mm 3mm ALtima® Blaze Straight
.7874 278 2000N3-4.0RB 27894 20mm 20mm 112mm 40mm 62mm 4mm ALtima® Blaze Straight
.7874 278 2000N4-1.0RB 27891 20mm 20mm 133mm 40mm 82mm 1mm ALtima® Blaze Straight
.7874 278 2000N4-3.0RB 27893 20mm 20mm 133mm 40mm 82mm 3mm ALtima® Blaze Straight
.7874 278 2000N5-1.0RB 27895 20mm 20mm 152mm 40mm 102mm 1mm ALtima® Blaze Straight
.7874 278 2000N5-3.0RB 27897 20mm 20mm 152mm 40mm 102mm 3mm ALtima® Blaze Straight
.7874 278 2000N3-2.0RB 27906 20mm 20mm 112mm 40mm 62mm 2mm ALtima® Blaze Straight
.7874 278 2000N3-2.0RBW 77950 20mm 20mm 112mm 40mm 62mm 2mm ALtima® Blaze Weldon
.9843 278 2500N3-1.0RB 27896 25mm 25mm 127mm 40mm 77mm 1mm ALtima® Blaze Straight
.9843 278 2500N3-3.0RB 27898 25mm 25mm 127mm 40mm 77mm 3mm ALtima® Blaze Straight
.9843 278 2500N3-4.0RB 27900 25mm 25mm 127mm 40mm 77mm 4mm ALtima® Blaze Straight
.9843 278 2500N4-1.0RB 27899 25mm 25mm 152mm 40mm 102mm 1mm ALtima® Blaze Straight
.9843 278 2500N4-3.0RB 27901 25mm 25mm 152mm 40mm 102mm 3mm ALtima® Blaze Straight
.9843 278 2500N5-1.0RB 27902 25mm 25mm 180mm 40mm 125mm 1mm ALtima® Blaze Straight
.9843 278 2500N5-3.0RB 27903 25mm 25mm 180mm 40mm 125mm 3mm ALtima® Blaze Straight