Osg 8595625 Screw Machine Drill Bit 0.2461 in Hss

Product Description

The OSG 8595625 is a screw machine length drill bit designed for high-performance drilling in metalworking applications. Built from high speed steel with a coated finish, this bit features a 120-degree faceted drill point, web-thinned tapered web, and a two-flute spiral configuration for efficient chip evacuation. The straight-cylindrical shank measures 8.00 mm in diameter, and the overall length comes in at approximately 2.95 inches (75 mm). At 0.2461 inches (6.25 mm) diameter, this bit falls in the Letter D size classification. It is engineered for right-hand cutting and carries a heavy-duty grade rating suited to demanding production and field use.

This screw machine drill bit is intended for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. The screw machine length format — shorter than jobber length — provides added rigidity and improved hole accuracy in drill press, CNC, and turret lathe setups. The 5xD flute-to-diameter ratio supports deep drilling within the screw machine length class. The Series 1100 designation identifies it within the OSG catalog for standard heavy-duty stub-length drilling. Licensed machinists, tool and die professionals, and maintenance mechanics are the primary users.

Key Features

• 0.2461 inches (Letter D) diameter with a tolerance of +0 to -0.022 mm for precise hole sizing
• 120-degree faceted drill point for self-centering entry and reduced thrust
• Web-thinned, tapered web reduces cutting resistance at the chisel edge
• High speed steel construction with coated finish for improved wear resistance
• Screw machine length body provides greater rigidity than jobber-length equivalents
• Right-hand spiral flutes with regular spiral type for consistent chip removal in steel and aluminum

Compatibility

The OSG 8595625 is compatible with workpiece materials including steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. The straight-cylindrical shank fits standard drill chucks and collets accepting 8.00 mm shank diameters. It is designed for use in drill presses, CNC machining centers, and turret lathes requiring a screw machine length stub bit in the 0.2000 to 0.2500 inch diameter range.

Installation Notes

Install this bit into a properly sized drill chuck or collet, ensuring the shank is fully seated and the chuck is tightened to manufacturer specification before operation. Power down all equipment completely before changing bits. Use appropriate cutting fluid or coolant on the workpiece material, especially when drilling stainless steel, to prevent work hardening and extend bit life. Follow all applicable machine guarding and PPE requirements per OSHA and shop safety standards.