Precision Twist Drill 6000189 Extra Length Drill Bit

Product Description

The PRECISION TWIST DRILL 6000189 is a high speed steel extra length drill bit designed for deep-hole drilling applications where standard-length bits cannot reach. With a 0.1719 inch diameter and a 12 inch overall length, this bit delivers extended reach without sacrificing rigidity. The 9 inch spiral flute length promotes efficient chip evacuation, and the web-thinned, tapered web configuration reduces thrust at the cutting tip. The uncoated finish suits general purpose drilling across a wide range of workpiece materials. A licensed machinist or maintenance technician is the typical installer.

This drill bit is suited for deep-hole and production drilling in aluminum, magnesium, copper, nickel, titanium, and synthetic materials. Secondary applications include drilling hardened steel, stainless steel, nickel alloy, malleable iron, high strength bronze, magnesium alloy, and reinforced plastics. The 12xD flute-to-diameter ratio makes this Series 1290 bit a practical choice when clearance depth is the primary constraint on a job.

Key Features

• 0.1719 inch diameter with matching 0.1719 inch straight-cylindrical shank diameter for consistent chuck seating
• 12 inch overall length and 9 inch flute length for extended reach in deep-hole applications
• High speed steel construction with uncoated finish for general purpose use across a broad material range
• Web-thinned, tapered web reduces cutting thrust and improves penetration
• 118 degree standard point angle with right-hand cutting direction and regular spiral flute
• Meets ANSI standards; Series 1290 designation

Compatibility

Designed as a general purpose extra length drill bit compatible with standard drill chucks and collets accepting a 0.1719 inch straight-cylindrical shank.

Installation Notes

Installation is performed by machinists or maintenance technicians using a drill press, milling machine, or handheld power drill with an appropriate chuck. Secure the shank fully in the chuck before operation and verify the workpiece is clamped or fixtured to prevent movement. Reduce feed rate when breaking through material to avoid bit deflection or breakage. Follow applicable shop safety procedures and machine guarding requirements during operation.