Internal Tool 69-1105-C Tapered End Mill Altin Solid Carbide

Product Description

The INTERNAL TOOL 69-1105-C is a solid carbide tapered end mill designed for precision milling in demanding metalworking applications. It features an 11-degree taper angle per side, a 1/16-inch small end diameter, and a 3-flute helical geometry. The AlTiN (aluminum titanium nitride) PVD coating delivers elevated heat resistance and extended tool life when cutting ferrous and exotic materials. The 1/4-inch shank diameter and 2.5-inch overall length make it suited for CNC machining centers and manual mills requiring tight-tolerance tapered profiles. Machinists and toolroom professionals are the primary users of this end mill.

This tapered end mill is applied in mold-making, die work, and precision part machining where a tapered wall profile is required. With a 0.5-inch length of cut and a 15-degree helix angle, it handles slotting and profiling in steel, stainless steel, cast iron, super alloys, and titanium. It is not center-cutting, so it requires a pre-drilled or pre-milled entry point before plunging. Typical applications include engraving lead-ins, draft-angle milling, and tapered cavity work on CNC equipment.

Key Features

• 11-degree taper angle per side (22-degree included angle) for accurate draft and tapered-wall profiles
• AlTiN PVD coating for high-heat resistance when cutting steel, stainless, cast iron, and titanium alloys
• Solid micrograin carbide substrate for rigidity and wear resistance in tough workpiece materials
• 3-flute helical design balances chip evacuation and surface finish in ferrous materials
• 1/16-inch small end diameter with a tolerance of +0.0000 / -0.0030 inches for precision fitment
• Not center-cutting - requires pre-milled entry; eliminates plunge-entry misuse

Compatibility

Designed for use in CNC machining centers and manual mills accepting a 1/4-inch straight shank. Suitable for primary workpiece materials coded P (steel), M (stainless steel), K (cast iron), and S (super alloys and titanium) per ISO material classification.

Installation Notes

Installation should be performed by a qualified machinist familiar with CNC tooling and collet systems. Secure the 1/4-inch shank in a properly sized collet or end mill holder and verify runout before cutting. Because this tool is not center-cutting, always establish an entry point with a center-cutting tool before engaging the tapered end mill. Follow the machine manufacturer and tooling supplier guidelines for speeds and feeds appropriate to the workpiece material and depth of cut.