Precision Twist Drill 6000798 Taper Shank Drill Bit

Product Description

The PRECISION TWIST DRILL 6000798 is a taper shank drill bit designed for high-performance metal drilling in machine shop and industrial environments. Built from high speed steel with a gold oxide finish, this bit features a 135-degree notched point and a right-hand spiral flute for efficient chip evacuation. The 3MT (Morse Taper 3) shank provides a secure, self-holding fit in compatible drill press spindles and lathes. At 0.75 inches in diameter and 10.5 inches overall length, it handles deep-hole drilling operations where rigidity and concentricity are critical. Web thinning reduces thrust and improves penetration in harder materials.

This bit is suited for drilling through steel, cast iron, and similar ferrous materials in production and maintenance machining applications. The 3MT shank makes it a standard choice for knee mills, radial arm drill presses, and engine lathes equipped with Morse taper spindles. It meets ANSI standards and is part of the Series 209CO lineup, targeting high-performance cutting operations in both job-shop and manufacturing settings.

Key Features

• 0.75 inch diameter with 5.875 inch flute length for deep-reach drilling
• 3MT Morse Taper shank for self-holding fit in compatible spindles
• 135-degree notched point with web thinning for reduced thrust and faster starts
• High speed steel construction with gold oxide finish for heat and wear resistance
• Right-hand regular spiral flute for efficient chip removal
• Meets ANSI standards; Series 209CO high-performance designation

Compatibility

Designed for use in drill press spindles, engine lathes, and milling machines equipped with a Number 3 Morse Taper (3MT) socket.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully powered down and at rest before inserting or removing the taper shank. Clean both the shank taper and the spindle socket thoroughly before seating to ensure full contact and prevent fretting. Use a proper drift and drift slot to remove the bit — never strike the shank directly.