Osg 257-2510 Combo Drill Reamer 0.2510 in Solid Carbide

Product Description

The OSG 257-2510 is a solid carbide combo drill reamer designed to drill and ream in a single pass, reducing cycle time and tool changes on the shop floor. It produces a 0.2510 inch finished bore diameter with a right-hand cutting direction. The flute length runs 2.465 inches, the overall length is 4 inches, and the cylindrical shank diameter is 0.2510 inches. The bright uncoated finish is suited for use in a range of workpiece materials where coating adhesion or heat buildup is not a primary concern. This tool is used by machinists and CNC operators in metalworking and precision machining environments.

The 257-2510 is intended for applications requiring close-tolerance hole finishing immediately after drilling. It is well suited to production environments running moderate to high volumes of precision bores in ferrous and non-ferrous materials. The single-pass drill-and-ream action makes it a practical choice for CNC machining centers and drill presses where tool changes reduce throughput. It is packaged individually and sold in single-unit quantities.

Key Features

• Combo drill-and-ream geometry completes hole drilling and finishing in one operation
• Solid carbide construction provides rigidity and wear resistance compared to HSS alternatives
• Right-hand cutting direction compatible with standard spindle rotation
• Cylindrical shank fits standard collets and drill chucks sized for 0.2510 inch shanks
• Bright uncoated finish suitable for a broad range of workpiece materials
• Compact 4 inch overall length supports use in confined setups or short-reach applications

Compatibility

Designed as a direct-fit replacement or production combo drill reamer for CNC machining centers, drill presses, and similar equipment accepting cylindrical shank tooling with a 0.2510 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist familiar with rotating cutting tool setup. Secure the cylindrical shank in a properly sized collet or chuck and verify runout before cutting. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool. Follow the machine manufacturer guidelines for feed rate and spindle speed appropriate to the workpiece material and tool diameter.