Value Collection SM0406940 Chucking Reamer 0.6940 in Hss

Product Description

The VALUE COLLECTION SM0406940 is a straight-flute chucking reamer designed to finish-ream drilled or bored holes to a precise 0.6940-inch diameter. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, this reamer delivers accurate sizing and smooth surface finish in a wide range of ferrous and non-ferrous materials. The straight-cylindrical shank allows secure clamping in standard drill press or lathe chucks. With an overall length of 9 inches and a 2.25-inch flute length, it is well suited for through-hole and shallow blind-hole applications in production and maintenance machining environments.

This chucking reamer is used in machine shops, maintenance departments, and manufacturing facilities where close-tolerance hole finishing is required. It is typically run in a drill press, engine lathe, or CNC machining center at reduced speed with cutting fluid applied. The right-hand cutting direction and six-flute geometry make it appropriate for finishing operations following rough drilling, where final bore sizing and surface finish are the primary objectives.

Key Features

• 0.6940-inch finished bore diameter for precise hole sizing
• High-speed steel (HSS) construction for durability across a range of workpiece materials
• Six straight flutes with right-hand cutting direction for smooth, accurate finishing cuts
• Bright, uncoated finish - ready to use as-supplied
• Straight-cylindrical shank for compatibility with standard chucks and collets
• 9-inch overall length with 2.25-inch flute length for versatile reach in typical machine setups

Compatibility

Designed as an OEM-style replacement or direct-use chucking reamer for machine tool setups requiring a 0.6940-inch finished hole diameter with a straight-cylindrical shank interface.

Installation Notes

Chucking reamers should be installed and operated by qualified machinists familiar with machine tool practices. Secure the straight-cylindrical shank firmly in a chuck or collet before operation, and always power down the machine before making any tool changes. Apply cutting fluid appropriate to the workpiece material to extend tool life and improve surface finish. Do not use a chucking reamer as a substitute for a drill - always pre-drill or bore the hole to within a few thousandths of the finished diameter before reaming.