Osg 653025012 Taper Length Drill Bit 0.25 in Solid Carbide

Product Description

The OSG 653025012 is a taper length, solid carbide drill bit designed for precision drilling in demanding industrial and machining applications. It features a 140-degree split point with X-thinned web geometry, which reduces thrust force and improves centering at entry. The 1/4-inch (0.2500-inch) diameter straight shank fits standard drill chucks and collet holders. The EgiAs coating provides enhanced wear resistance and heat dissipation, making this bit well-suited for high-speed drilling in ferrous and non-ferrous materials. Coolant-through capability supports chip evacuation and thermal control during deep-hole drilling operations. This bit belongs to the OSG Series 6530 taper length platform.

This drill bit is intended for use in CNC machining centers, drill presses, and automated drilling cells where consistent hole quality and tool life are critical. The 10xD flute-to-diameter ratio and taper length body make it appropriate for applications requiring deeper reach than a jobber-length bit without sacrificing rigidity. Right-hand spiral flute geometry promotes clean chip evacuation in through-hole and blind-hole drilling. Machinists, toolroom technicians, and CNC operators in metalworking shops are the primary users of this tool.

Key Features

• Solid carbide construction for high rigidity and wear resistance in hard materials
• 140-degree drill point angle with X-thinned web for reduced entry thrust and improved self-centering
• EgiAs coating enhances tool life and heat resistance at elevated cutting speeds
• Coolant-through design supports chip evacuation and thermal management in deep-hole applications
• 10xD flute length-to-diameter ratio provides extended reach with taper length geometry
• Right-hand spiral flute, straight 1/4-inch shank for compatibility with standard toolholding systems

Compatibility

Designed as an OEM-style replacement drill bit for applications requiring a 1/4-inch diameter, taper length, solid carbide twist drill with a straight shank. Part of the OSG Series 6530 product family.

Installation Notes

Installation and use should be performed by qualified machinists or CNC operators familiar with carbide tooling and proper speeds-and-feeds selection. Secure the straight shank fully within a collet, drill chuck, or toolholder before operation, and verify runout before cutting. Carbide tooling is brittle — avoid side loads, interrupted cuts, or re-chucking over worn collets without inspection. Enable coolant-through flow before initiating the cut when using the internal coolant feature.