Harvey Tool 991708-C3 Drill Mill 1/8 in 2 Flute Altin Carbide

Product Description

The HARVEY TOOL 991708-C3 is a solid carbide drill mill designed for combined drilling and milling operations in a single tool. With a 1/8 inch (0.1250 inch) cutting diameter and a 60-degree point angle, it transitions cleanly from plunge drilling to peripheral milling without a tool change. The 2-flute geometry supports chip evacuation in both operations. An AlTiN (aluminum titanium nitride) coating increases surface hardness and heat resistance, extending tool life in ferrous and high-temperature alloys. This tool is suited for machinists and toolroom operators running CNC machining centers or manual mills where setup time and tool count need to be minimized.

The 991708-C3 is intended for precision machining applications requiring both drilling and end milling in tight workspaces or small-feature parts. The 1/8 inch diameter and 1/2 inch length of cut make it well suited for small-bore work, angled entry holes, and 2.5D contour milling on ferrous metals, stainless steel, titanium, and hardened materials where AlTiN coating performance is most effective. It is packaged and sold as a single unit.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding materials
• 60-degree point angle enables accurate drill entry and spot drilling before milling
• AlTiN coating provides elevated hardness and thermal resistance for extended tool life
• 2-flute design promotes chip flow during both drilling and side milling passes
• Matched shank and cutting diameter (1/8 inch) simplifies toolholder selection

Compatibility

Designed as a direct-fit replacement for 1/8 inch shank drill mills in CNC machining centers, knee mills, and toolroom mills accepting standard straight-shank end mill holders or collet chucks.

Installation Notes

Installation and use should be performed by a qualified machinist or CNC operator. Secure the 1/8 inch shank in a properly sized collet or end mill holder, ensuring full shank engagement per the toolholder specification. Verify spindle runout before cutting, as excessive runout at this diameter accelerates flute wear and can cause breakage. Always follow machine tool manufacturer guidelines for speeds, feeds, and depth of cut for the specific workpiece material.