100 Series

Tool 100i313A

Small diameter work puts stress on the edge in ways larger tools don't see. The 100i313A handles that stress through controlled geometry and surface treatment designed for repeatability in precision work.

Four flutes at 0.3125" diameter create shorter, more frequent chip evacuation cycles.
In steel and titanium roughing operations, that frequency prevents chip packing in tight spaces where larger tools would bog down.
The TiAlSiN coating adds a thermal barrier that matters more at this diameter.
Small tools run hotter per unit of material removed, and the aluminum content in the coating pulls heat away from the cutting edge before it can affect dimensional accuracy.
The 0.006" corner radius strengthens the edge without compromising corner definition.
Sharp enough for clean entry, strong enough to maintain form through extended runs on iron castings and nickel alloys where edge chipping typically ends tool life early.