Precision Twist Drill 5999467 Taper Shank Drill Bit 1.5in 4MT

Product Description

The PRECISION TWIST DRILL 5999467 is a taper shank drill bit designed for heavy-duty drilling in metal and hard materials. It features a 1.5-inch diameter with a 4MT (Morse Taper 4) shank, making it compatible with large drill presses and milling machines that accept MT4 spindles. The bit is constructed from high speed steel (HSS) with an oxide finish that provides basic lubricity and corrosion resistance. At 15 inches overall length with a 9.375-inch spiral flute, it offers extended reach for deep-hole applications. The 118-degree standard point with web thinning reduces entry force and improves chip clearance on general-purpose drilling tasks.

This drill bit is suited for job shops, maintenance facilities, and production environments where large-diameter through-holes are required in steel, cast iron, aluminum, and similar materials. The right-hand cutting direction and regular spiral flute geometry make it a standard general-purpose tool for machinists and industrial maintenance technicians. The 4MT taper shank seats securely in compatible spindles without a chuck, transmitting high torque directly for controlled, accurate drilling at large diameters.

Key Features

• 1.5-inch diameter with 4MT taper shank for direct spindle mounting
• High speed steel construction for durability across a range of workpiece materials
• Oxide finish for basic lubricity and surface protection
• 118-degree standard point with web thinning for reduced entry force
• 9.375-inch spiral flute length with regular helix for efficient chip evacuation
• Right-hand cutting, ANSI standard Series 209

Compatibility

Designed for use in drill presses, lathes, and milling machines fitted with a Morse Taper 4 spindle or sleeve. Suitable for general-purpose drilling in metalworking applications.

Installation Notes

Installation is performed by machinists or industrial maintenance technicians. Power down and lock out the machine before seating or removing the taper shank. Clean both the shank and the spindle bore of chips and oil before seating to ensure full taper contact and prevent slippage under load. Use a drift and soft mallet through the spindle drift slot to remove the bit safely — never force the shank by striking the flutes or bit body.