970 Series

Tool 970i3208B

You need clean 0.125" slots in hardened steel without chatter. Eight flutes and AlTiN coating handle it.

The 970i3208B runs where standard end mills can't reach.
Eight flutes distribute cutting forces across more edges, reducing per-tooth load in interrupted cuts typical of keyseat operations.
The 0.25" neck diameter maintains rigidity while allowing access into restricted geometries.
AlTiN coating extends tool life in steel and iron applications by reducing heat buildup and preventing workpiece material adhesion during the high-contact cutting that defines side slotting.
Cut width stays true to 0.125" because the geometry prevents deflection that would otherwise open up the slot.
Keep radial engagement conservative.
The neck diameter sets your stability limit, not the 0.5" cutting diameter, so plan feeds and speeds accordingly.