Precision Twist Drill 5999754 Taper Length Drill Bit 29/64

Product Description

The PRECISION TWIST DRILL 5999754 is a taper length drill bit designed for general-purpose drilling across a wide range of materials. Built from high speed steel with a bright/uncoated finish, it features a 118-degree standard point angle and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. The straight shank measures 29/64 inch (0.4531 inches) in diameter, and the spiral flute runs 4-3/4 inches in length with a 6xD flute-to-diameter ratio. Right-hand cut geometry makes it compatible with standard drill presses, hand drills, and CNC equipment used by machinists and maintenance trades.

This bit is suited for production and maintenance drilling in metals and non-metals alike. It handles alloy steel, carbon steel, stainless steel, cast iron, malleable iron, aluminum, aluminum alloy, brass, bronze, high strength bronze, copper, magnesium, magnesium alloy, nickel, nickel alloy, cermet, graphite, and reinforced plastic materials. The taper length body provides additional reach compared to jobber-length bits, making it useful in applications where standard-length bits cannot clear the workpiece or fixture.

Key Features

• High speed steel construction for durability across ferrous and non-ferrous materials
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• Taper length body at 7-1/2 inches overall for extended reach applications
• Spiral flute length of 4-3/4 inches with 6xD ratio for efficient chip clearance
• Bright/uncoated finish suitable for general-purpose use without lubrication restrictions
• Straight shank, no threading — compatible with standard drill chucks
• Conforms to ANSI standards; Series R51

Compatibility

Designed as a general-purpose taper length drill bit compatible with standard three-jaw drill chucks accepting a 29/64 inch straight shank. Suitable for use in drill presses, hand-held drills, and CNC drilling equipment across machining and maintenance applications.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance professionals familiar with drilling operations. Secure the shank fully in the chuck and verify concentricity before running at speed. Always power down and de-energize the machine before changing bits. Use appropriate cutting fluid or coolant when drilling ferrous metals to extend tool life, even though this bit does not require coolant through the shank.