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The OSG 300-1015 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. Sized to wire gauge 38 with a decimal diameter of 0.1015 inches, this reamer holds a tight tolerance of +0.0001 to +0.0004 inches, making it well suited for work that requires accurate, repeatable hole sizing. The straight flute geometry and right-hand cutting direction provide clean, consistent material removal. At 2.25 inches overall length with a 0.625-inch flute length, this compact reamer fits standard drill chucks and collet holders used in machining centers, drill presses, and lathes. It is part of OSG Series 300D.
This reamer is intended for general machining applications where a wire-gauge-sized hole must be finished to close dimensional tolerances. The solid carbide construction provides durability in ferrous and non-ferrous materials. The straight-cylindrical shank seats securely in standard chucking setups. With four flutes and a bright, uncoated finish, the 300-1015 is appropriate for shop environments where frequent reamer changes and consistent bore quality are expected. Machinists, tool-and-die makers, and CNC operators are the primary users.
Designed as an OEM-style solid carbide chucking reamer for general machining applications requiring wire-gauge-sized bore finishing in standard drill chucks and collet holders.
Installation and use of this reamer should be performed by a qualified machinist following standard shop safety procedures. Ensure the machine spindle is fully stopped and the toolholder is properly secured before inserting or removing the reamer. Verify runout on the shank before committing to a finishing pass, as excessive runout will widen the bore beyond tolerance. Do not exceed recommended feed and speed parameters for the workpiece material and tool diameter.
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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