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The PRECISION TWIST DRILL 5010698 is a high-speed steel (HSS) chucking reamer with a straight-flute design, built for precision hole finishing in metal fabrication and mechanical assembly applications. With a 5/8-inch tip diameter and an overall length of 9 inches, this reamer is sized for common bore finishing work where dimensional accuracy and surface finish matter. HSS construction provides the hardness and wear resistance needed for repeated use in ferrous and non-ferrous materials. Machinists, tool-and-die workers, and maintenance technicians reach for this style of reamer when a drilled hole needs to be brought to a precise final diameter.
This chucking reamer is suited for use in drill presses, lathes, and CNC machines where the tool is held in a chuck or collet. The straight-flute configuration is appropriate for through-holes and blind holes in materials such as mild steel, aluminum, brass, and cast iron. It is a common choice in production shops, maintenance facilities, and job-site repair scenarios where a clean, accurate bore finish is required without secondary grinding or honing.
Designed as a standard chucking reamer for use in any machine tool capable of accepting a straight-shank reamer of 5/8-inch diameter, including drill presses, turret lathes, and CNC machining centers.
This reamer is installed and operated by machinists and maintenance technicians in machine-tool setups. Always secure the shank firmly in the chuck or collet before operation and confirm the spindle speed is appropriate for the material and reamer diameter — excessive speed reduces tool life and surface finish quality. Do not attempt to use a chucking reamer freehand. Ensure the workpiece is properly fixtured and the pre-drilled hole is within the recommended undersize tolerance before reaming.
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