Osg 257-0980 Combo Drill Reamer 0.098 in Solid Carbide

Product Description

The OSG 257-0980 is a solid carbide combo drill reamer designed to perform drilling and reaming in a single pass. The tool produces a finished bore to a 0.098-inch diameter with a 0.57-inch flute length and an overall length of 3 inches. The bright coating preserves surface hardness and reduces friction during cutting. A cylindrical shank with a 0.098-inch diameter provides consistent tool holding in standard chucks and collets. This tool is used by machinists and tool-and-die professionals who need a precise, finished hole diameter without a secondary reaming operation.

The OSG 257-0980 is suited for precision drilling and reaming applications in metalworking and machining environments. Its compact overall length and short flute make it appropriate for tight-clearance bore work, small-diameter hole finishing, and production runs where combining two operations into one pass reduces cycle time and tooling changeovers. It is well-suited for CNC machining centers and drill presses operating on ferrous and non-ferrous materials where hole tolerance is critical.

Key Features

• Combo drill-reamer design completes drilling and reaming in a single pass
• Solid carbide construction provides rigidity and wear resistance in hard materials
• Bright coating finish reduces friction and assists chip evacuation
• Right-hand cutting direction compatible with standard spindle rotation
• Cylindrical shank at 0.098 inches fits standard collets and chucks
• Compact 3-inch OAL suits tight-clearance and close-tolerance bore applications

Compatibility

Designed as an OEM-style replacement combo drill reamer for precision machining applications requiring a 0.098-inch finished bore diameter with a cylindrical shank interface.

Installation Notes

Installation and use should be performed by qualified machinists familiar with cutting tool setup and machine tool operation. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from the chuck or collet. Verify runout and tool projection prior to cutting to maintain bore tolerance. Follow applicable shop safety standards and tooling manufacturer feed and speed guidelines for solid carbide cutting tools.