Mitsubishi 663154 Extra Length Carbide Drill Bit 0.1875 in

Product Description

The MITSUBISHI 663154 is a solid carbide extra length drill bit engineered for high-performance and high-precision drilling in demanding trade and industrial applications. The bit measures 0.1875 inches (3/16 inch) in diameter with an overall length of 4.168 inches and a flute length of 2.28 inches. A TiAlN coating provides heat and wear resistance for extended tool life in tough materials. The right-hand helical flute geometry and X-thinned web point support clean, accurate hole entry and efficient chip evacuation, making this bit a reliable choice for machinists and fabricators working in production environments.

This drill bit is suited for cross hole drilling, standard drilling, and stack drilling operations. Its 8xD flute-to-diameter ratio supports deeper drilling depths up to 1.535 inches in a single pass. The cylindrical shank at 0.236 inches diameter seats securely in standard drill chucks and collet holders. Primary workpiece material is steel, with secondary compatibility across stainless steel, superalloys and titanium, structural steel, tempered steel, iron, high strength bronze, hardened steel, copper, cast iron, carbon steel, bronze, brass, aluminum, and aluminum alloy.

Key Features

• Solid carbide construction for rigidity and wear resistance in high-load drilling
• TiAlN coating extends tool life at elevated cutting temperatures
• 140-degree drill point angle with X-thinning reduces thrust and improves centering
• Coolant-through design supports internal chip flushing and thermal management
• Right-hand helical, 2-flute geometry promotes efficient chip evacuation
• MVS Series rated for high performance and high precision grades per ISO specification

Compatibility

The 663154 is designed for use in CNC machining centers, drill presses, and manual machines accepting a 0.236-inch cylindrical shank. Verified compatible workpiece materials include steel, stainless steel, superalloys and titanium, structural steel, tempered steel, iron, high strength bronze, hardened steel, copper, cast iron, carbon steel, bronze, brass, aluminum, and aluminum alloy. Suitable tool applications are cross hole drilling, drilling, and stack drilling.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with carbide drill bit handling and CNC or manual drill setup. Ensure the machine spindle and workpiece are fully secured before operation. Carbide tooling is brittle — avoid side loading, impact, or interrupted cuts beyond the rated application. Coolant-through capability should be connected to an appropriate coolant supply to realize full tool life and chip management performance.