Precision Twist Drill 5999547 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5999547 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, this bit features a 118-degree standard point angle and a right-hand spiral flute for clean, efficient chip evacuation. It measures 0.2340 inches in diameter with a 3.75-inch flute length and a 6.125-inch overall length, giving it the extended reach that taper length geometry provides over jobber-length equivalents. It is well suited for machinists, pipefitters, and metalworkers who need added depth without stepping up to a long-series bit.

This bit is part of the Series R55 lineup and carries an ANSI-compliant construction. The straight shank and 0.2340-inch shank diameter allow it to seat in standard drill chucks without adapters. The web-thinned, tapered web configuration reduces thrust at the cutting tip, making it easier to start holes accurately. It is a practical option for trade shops, fabrication facilities, and field technicians who encounter varied metal stock on a regular basis.

Key Features

• 0.2340-inch diameter corresponds to 15/64 inch fractional and Letter A drill sizing
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust
• High speed steel construction handles a broad range of metals including stainless steel, cast iron, and nickel alloy
• Bright, uncoated finish — no coating buildup to affect hole tolerance
• Right-hand cut with regular spiral flute for positive chip removal
• 6.125-inch overall length with 3.75-inch flute length provides extended reach in tight setups
• ANSI-compliant Series R55 construction

Compatibility

Rated for use in alloy steel, aluminum, aluminum alloy, brass, bronze, carbon steel, cast iron, cermet, copper, graphite, hardened steel, high strength bronze, magnesium, magnesium alloy, malleable iron, nickel, nickel alloy, reinforced plastic materials, and stainless steel. Fits any standard drill chuck accepting a 0.2340-inch straight shank.

Installation Notes

Install in a drill press, hand drill, or milling machine with a chuck rated for straight shank bits. Secure the shank fully in the chuck and confirm runout is within acceptable limits before drilling. Always wear appropriate eye protection and secure the workpiece. Consult applicable shop safety standards and the material data sheet for the workpiece when drilling hardened or exotic alloys.