Mitsubishi 662709 Carbide Drill Bit 0.3125 in 140 Deg Tialn

Product Description

The MITSUBISHI 662709 is a carbide extra length drill bit engineered for demanding precision drilling applications in metalworking and machining environments. Sized at 0.3125 inches (5/16 inch) in diameter with a 140-degree split point and TiAlN coating, this drill bit delivers high thermal resistance and extended tool life under aggressive feed and speed conditions. The helical, right-hand flute geometry with X-Thinning web treatment reduces entry force and improves chip evacuation. Coolant-through capability supports deep hole drilling where heat buildup and chip packing are primary concerns. The MVS Series designation indicates a high-performance, high-precision grade tool intended for professional machining use.

This drill bit is suited for deep hole drilling, cross hole drilling, stack drilling, and general drilling operations in ferrous and non-ferrous materials. Its primary workpiece material rating covers alloy steel and steel, with secondary ratings spanning stainless steel, superalloys, titanium, tempered steel, hardened steel, nickel alloys, cast iron, carbon steel, brass, bronze, and copper. The 3xD flute-to-diameter ratio and maximum drilling depth of 0.9930 inches make it appropriate for CNC machining centers, drill presses, and manual machine tools in production and job shop settings. Machinists and tooling specialists are the typical end users.

Key Features

• TiAlN coating for high-heat resistance and extended tool life in hard and abrasive materials
• Coolant-through design supports chip evacuation and heat control in deep hole applications
• 140-degree X-Thinned split point reduces thrust force and improves hole entry accuracy
• Helical right-hand flute with 3xD ratio optimized for deep hole and stack drilling
• Cylindrical shank compatible with standard drill chucks and collet systems
• High-performance, high-precision grade carbide substrate suitable for alloy steel, stainless, superalloys, and titanium

Compatibility

Designed for use in CNC machining centers, drill presses, and manual machine tools accepting a 0.315-inch cylindrical shank. Rated for drilling alloy steel, steel, stainless steel, superalloys, titanium, hardened steel, tempered steel, nickel alloys, cast iron, carbon steel, brass, bronze, and copper per ISO material grade designations P, M, S, H, and K.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with cutting tool setup and machine operation. Secure the shank fully in the chuck or collet before operation and verify runout is within acceptable tolerance for the application. Enable coolant-through flow before beginning the cut when drilling deep holes to prevent thermal damage and chip packing. Follow machine tool manufacturer guidelines for feed rate and spindle speed based on workpiece material and drilling depth.