Precision Twist Drill 6000448 Cobalt Drill Bit 53/64 in

Product Description

The PRECISION TWIST DRILL 6000448 is a reduced shank cobalt drill bit designed for drilling into ferrous metals, aluminum, titanium, copper, nickel, and other demanding materials. The bit measures 53/64 inch (0.8281 inch decimal) in diameter with a 1/2 inch straight-cylindrical shank, allowing it to fit standard 1/2 inch chucks even though the cutting diameter is larger. The 118-degree split point reduces walking at the start of the cut and lowers thrust requirements. At 6 inches overall length with a 3 inch flute length, it handles moderate-depth holes while maintaining rigidity. Cobalt construction provides elevated heat resistance compared to standard high-speed steel, making it well suited for hard or abrasive workpieces.

This drill bit is built for industrial and trade applications where ferrous metal, stainless, titanium, and nickel-based alloys are regularly encountered. The reduced shank design is the key practical feature here: the 1/2 inch shank lets machinists, fabricators, and maintenance technicians run a large-diameter bit in a standard 1/2 inch drill press or hand drill chuck without requiring a larger collet or chuck upgrade. Right-hand spiral flutes evacuate chips efficiently during through-hole and blind-hole drilling in shop, field, and maintenance-repair environments.

Key Features

• 53/64 inch (0.8281 inch) cutting diameter with a 1/2 inch reduced straight-cylindrical shank for use in standard 1/2 inch chucks
• Cobalt construction provides superior heat and wear resistance over standard high-speed steel in hard or abrasive materials
• 118-degree split point reduces bit walking and lowers drilling thrust on entry
• 3 inch flute length supports drilling to a maximum depth of 3 inches
• Bright/uncoated finish allows easy visual inspection of wear and maintains sharp cutting edges
• Right-hand spiral flutes with regular helix angle for reliable chip evacuation in ferrous and non-ferrous materials
• Meets ANSI standards; Series R56CO

Compatibility

Designed for use in ferrous metals as primary workpiece material; also rated for aluminum, cermet, copper, magnesium, nickel, synthetic, and titanium workpieces. Fits any 1/2 inch drill press chuck, hand drill, or magnetic drill accepting a straight-cylindrical shank.

Installation Notes

This bit is installed and used by machinists, maintenance technicians, and metal fabricators. Secure the 1/2 inch shank firmly in a properly sized chuck before operation and confirm the workpiece is clamped or fixtured to prevent rotation. No coolant-through capability is present on this bit; use appropriate cutting fluid applied externally when drilling hard or heat-sensitive alloys to extend tool life. Inspect the cutting edges and split point before each use and replace the bit if chipping or excessive wear is observed.