Precision Twist Drill 5999828 Taper Shank Drill Bit

Product Description

The PRECISION TWIST DRILL 5999828 is a taper shank drill bit designed for heavy-duty drilling in metal, cast iron, and similar hard materials. It features a 1.625-inch diameter, a 4MT (Morse Taper 4) shank, and an overall length of 15.625 inches. The bit is manufactured from high speed steel with an oxide finish that provides basic lubricity and corrosion resistance during cutting operations. A 118-degree standard point angle with web thinning reduces entry force and helps center the bit on the workpiece. The right-hand spiral flute configuration evacuates chips efficiently throughout the 10-inch flute length. This bit is suited for machinists, tool and die shops, and maintenance professionals working on drill presses or milling machines equipped with a 4MT spindle.

The 5999828 belongs to PRECISION TWIST DRILL Series S209 and is built to ANSI standards, making it a straightforward general-purpose choice for production drilling and job-shop applications. It is appropriate for use in large floor-standing drill presses, radial arm drills, and milling machine quills that accept a 4MT taper adapter. The 4xD flute-length-to-diameter ratio supports stable chip clearance when drilling at full depth. No coolant-through capability is present, so adequate external cutting fluid or paste lubricant should be applied when drilling ferrous materials at sustained feeds.

Key Features

• 1.625-inch (1-5/8 inch) cutting diameter for large-hole applications
• 4MT Morse Taper shank fits drill presses and milling machines with 4MT spindles
• High speed steel construction provides durability across a broad range of workpiece materials
• Oxide finish reduces friction and offers basic corrosion protection
• 118-degree standard point with web thinning for reduced thrust and improved centering
• Regular right-hand spiral flutes with 10-inch flute length for effective chip evacuation
• Manufactured to ANSI standards, Series S209

Compatibility

Designed as a general-purpose taper shank drill bit for drill presses, radial arm drills, and milling machines equipped with a 4MT (Morse Taper 4) spindle or sleeve adapter. Confirm spindle taper designation before installation.

Installation Notes

A licensed machinist or qualified maintenance technician should install and operate this bit on appropriate machine tools. Power down and lock out the machine before inserting or removing the taper shank from the spindle. The 4MT shank is seated by firm, straight insertion into the spindle socket; a drift key and drift slot are the standard means of removal per common shop practice. Apply an appropriate cutting fluid externally during drilling to extend tool life and prevent workpiece heat buildup, as this bit does not support coolant-through delivery.