Value Collection SM0406890 Chucking Reamer 0.6890 in Hss

Product Description

The VALUE COLLECTION SM0406890 is a chucking reamer designed for precision hole finishing in metal machining applications. Built from high-speed steel (HSS) with a bright, uncoated finish, this reamer features a 0.6890-inch diameter and a straight-cylindrical shank for secure chuck mounting. With 6 straight flutes and right-hand cutting direction, it delivers consistent sizing and smooth surface finish on through or blind holes. Overall length is 9 inches with a flute length of 2.25 inches. At 0.4 pounds, it is a practical option for machine shop and production environments where close-tolerance reaming is required.

This chucking reamer is suited for use in drill presses, lathes, and milling machines where a pre-drilled or bored hole needs to be brought to a precise finished diameter. It fits within the 0.5000 to 0.6999 inch reamer diameter range and is appropriate for ferrous and non-ferrous metal workpieces. Machinists and tool-and-die professionals use this style of reamer in both job shop and production settings where dimensional accuracy and hole finish are critical requirements.

Key Features

• 0.6890-inch finished diameter for close-tolerance hole sizing
• High-speed steel (HSS) construction for durability across a range of workpiece materials
• 6 straight flutes with right-hand cutting direction for smooth, consistent material removal
• Bright, uncoated finish — ready for use as supplied
• Straight-cylindrical shank for direct chuck mounting without additional adapters
• 9-inch overall length with 2.25-inch flute length for reach and rigidity balance

Compatibility

Designed as a standard chucking reamer for use in drill presses, lathes, and milling machines that accept straight-cylindrical shank tooling in the 0.5000 to 0.6999 inch diameter range.

Installation Notes

Chucking reamers are installed by machinists using a standard drill chuck or collet rated for the shank diameter. Always secure the workpiece firmly and ensure the spindle is fully stopped before mounting or removing the reamer. Run at appropriate speeds and feeds for the workpiece material and reamer diameter to avoid overheating the HSS cutting edges. Do not use a chucking reamer to remove excessive stock — pre-drill or bore the hole to within accepted allowance before reaming to final size.