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The PRECISION TWIST DRILL 5010708 is a high-speed steel (HSS) chucking reamer designed for precision hole finishing in metal fabrication and mechanical service applications. Featuring a straight flute design, this reamer is used to bring drilled or bored holes to tight dimensional tolerances and smooth surface finishes. At 3/4 inch in diameter and 9-1/2 inches in overall length, it suits deep-reach finishing operations where standard-length reamers fall short. Licensed machinists, pipefitters, and mechanical contractors reach for HSS chucking reamers when bore size and finish quality are critical to a proper fitting or seal.
This chucking reamer is suited for use in drill presses, lathes, and CNC machining centers where the tool is held in a chuck and driven at controlled feed and speed rates. It is a common tool in mechanical rooms, fabrication shops, and field service environments where precision hole sizing is required on pipe flanges, pump housings, valve bodies, and similar components. The straight flute geometry works well in through-hole applications and in materials such as mild steel, cast iron, and non-ferrous metals.
Designed as a standard chucking reamer for use in drill presses, lathes, and machining centers that accept a straight-shank or chucking-style tool in the 3/4 inch diameter range.
Chucking reamers should be installed and operated by qualified machinists or mechanical trade professionals familiar with proper speeds and feeds for HSS tooling. Secure the shank firmly in the chuck and verify alignment before beginning a cut to avoid tool deflection and bore damage. Always de-energize and lock out equipment before changing tooling. Use appropriate cutting fluid to extend tool life and improve surface finish.
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