Precision Twist Drill 5995762 Extra Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5995762 is an extra length high-speed steel drill bit designed for deep-hole drilling applications where standard-length bits cannot reach. Ground to a 135-degree split-point geometry, it starts on contact without a center punch and reduces walking on smooth or sloped surfaces. The parabolic flute profile improves chip evacuation during extended cuts, reducing heat buildup and the need to peck-drill as frequently. At 8 inches overall length with a 6-inch flute, it provides significant reach for deep bores in metal fabrication, mechanical, and maintenance work. Machinists, tool-and-die technicians, and industrial maintenance mechanics are the primary users of this bit.

This bit is suited for drilling through a wide range of workpiece materials in both production and job-shop environments. Its 23/64-inch diameter and straight-cylindrical shank make it compatible with standard drill chucks on drill presses, lathes, and hand-held power drills. The web-thinned, parallel-web construction is optimized for right-hand cutting and maintains point integrity over repeated sharpenings. Typical applications include structural fabrication, maintenance repair, and deep-reach drilling in equipment housings or frames.

Key Features

• 135-degree split-point tip starts on contact and eliminates center-punching on most metals
• Parabolic flute geometry accelerates chip evacuation and reduces heat in deep-hole cuts
• Web-thinned parallel web maintains cutting efficiency and extends bit service life
• 8-inch overall length with 6-inch flute provides extended reach beyond standard jobber-length bits
• Bright uncoated high-speed steel finish allows visual wear inspection and works across a broad material range
• Straight-cylindrical shank fits standard three-jaw drill chucks without adapters

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 straight-cylindrical shank at 23/64-inch diameter.

Installation Notes

Install in a properly sized drill chuck and tighten securely with a chuck key before operation. Ensure the workpiece is clamped or fixtured to prevent rotation during drilling. Use appropriate cutting fluid or coolant for harder materials such as stainless steel or hardened steel to extend bit life. Inspect the split point and cutting edges before each use and regrind or replace when wear is visible.