Precision Twist Drill 5999465 Taper Shank Drill Bit 1 in

Product Description

The PRECISION TWIST DRILL 5999465 is a taper shank drill bit designed for metal drilling in industrial and production machining environments. Built from high speed steel with an oxide finish, it measures 1 inch in diameter with an 11-inch overall length and a 6.375-inch spiral flute. The Morse Taper 3 shank seats directly into compatible taper-shank spindles and tailstocks, eliminating the need for a separate chuck. The 118-degree standard point geometry and right-hand spiral flute make this a reliable general-purpose drill for a wide range of ferrous and non-ferrous materials. Licensed machinists and tool-and-die professionals are the primary installers.

This drill bit is suited for general-purpose drilling in job shops, maintenance facilities, and production floors. It fits drill presses, lathes, and milling machines equipped with a No. 3 Morse Taper spindle. The 4xD flute-to-diameter ratio provides adequate chip clearance for moderate-depth holes in steel, cast iron, and similar materials. The web-thinned tip reduces thrust requirements and improves centering performance. It conforms to ANSI standards for taper shank drill geometry, making it a straightforward drop-in for standard 3MT toolholding setups.

Key Features

• 1-inch diameter with 118-degree standard point angle for general-purpose drilling
• No. 3 Morse Taper (3MT) shank for direct spindle mounting without a chuck
• High speed steel construction with oxide finish for wear resistance
• 6.375-inch spiral flute length with right-hand cutting direction
• Web-thinned tip reduces thrust and improves hole entry accuracy
• Meets ANSI standards for taper shank drill geometry

Compatibility

Designed for use in drill presses, lathes, and milling machines equipped with a No. 3 Morse Taper spindle socket.

Installation Notes

Installation and use should be performed by a qualified machinist familiar with taper shank tooling. Before seating or removing the bit, ensure the machine is fully powered down and the spindle has come to a complete stop. Clean both the taper shank and the spindle socket to remove chips and oil before seating to ensure full contact and prevent slippage. Use a proper drift and drift slot to remove the bit — do not strike the bit or spindle directly to dislodge it.