100C Series

Tool 100Ci156FA

The 100Ci156FA is a 5/32" 4-flute chipbreaker end mill from the 100C Series, for deep pockets and full slots in steel, iron, titanium and nickel alloys. The F in the part number means a reduced neck behind the flutes, so you reach 0.750" from the tip, deeper than its 0.3125" length of cut.

The chipbreakers cut the chip short before long strands can pack the flutes, which matters in steel, where a packed chip is heavy and hard enough to break an edge.
Sonic sets the chipbreaker pattern so you can run a higher feed rate than a smooth flute and still get a good wall finish.
The end is center cutting, so you can ramp and plunge.
You clamp a 1/4" shank, stiffer than a 5/32" one, and get the reach from the neck.
A 0.004" corner radius holds up better than a sharp corner and leaves a 0.004" fillet where the wall meets the floor.
The TiAlSiN coating is built for heat: it holds up to 1000°C and its low-friction surface cuts down wear.