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The PRECISION TWIST DRILL 5998924 is a taper length drill bit designed for professional drilling applications in metalworking and general-purpose trade use. Sized at 7/32 inch (0.2188 inches) in diameter, it is manufactured from high speed steel (HSS) with a bright/uncoated finish and features a standard 118-degree split point. The 6xD flute-to-diameter ratio and web-thinned, tapered web configuration give this bit improved chip evacuation and reduced thrust during drilling. At 6 inches overall length, it reaches deeper than jobber-length bits without sacrificing rigidity. Licensed machinists, maintenance mechanics, pipefitters, and HVAC sheet metal technicians commonly select taper length bits for spot work in confined or deep-hole applications.
This drill bit is suited for right-hand drilling in non-ferrous materials including aluminum, aluminum alloy, copper, magnesium, and magnesium alloy. The fast spiral flute promotes efficient chip removal when working these softer, gummy materials. The cylindrical shank (0.2188 inches diameter, non-threaded) seats directly into standard three-jaw drill chucks. It conforms to ANSI standards and is rated as a general-purpose grade bit appropriate for shop, field service, and light production drilling tasks.
Designed as a general-purpose taper length drill bit compatible with standard three-jaw drill chucks accepting a 0.2188-inch cylindrical shank. Rated for use in aluminum, aluminum alloy, copper, magnesium, and magnesium alloy per Series R51FS application guidelines.
Installation and use of this bit is performed by machinists, maintenance technicians, and trade professionals using corded or cordless drill presses and handheld drills with compatible chuck capacity. Secure the cylindrical shank fully in the chuck before operation and verify chuck key removal prior to startup. Appropriate cutting fluid or lubricant is recommended when drilling non-ferrous metals to extend tool life and improve finish quality. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point shows damage that cannot be corrected by proper resharpening.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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