Sgs 66448 Screw Machine Drill Bit 3/8 in Solid Carbide

Product Description

The SGS 66448 is a screw machine length drill bit designed for high-performance drilling in a wide range of workpiece materials. Built from micrograin solid carbide and coated with Ti-NAMITE-X, this bit delivers extended tool life and edge retention in demanding production environments. It measures 3/8 inches in diameter with a 3-1/2 inches overall length and features a 135-degree split point for fast, self-centering starts with minimal walking. The two-flute spiral design with web thinning promotes efficient chip evacuation. Coolant-through capability makes it suitable for CNC and automated machining centers where through-spindle coolant is available. Machinists and tool-and-die professionals are the primary installers and operators.

The SGS 66448 is suited for universal workpiece materials, including steel, stainless, aluminum, cast iron, and similar alloys. The screw machine length format — shorter overall length relative to standard jobber bits — provides increased rigidity and reduced deflection, making it the preferred choice for high-tolerance hole work in machining cells, drill presses, and CNC machining centers. The straight-cylindrical shank fits standard drill chucks and collet systems without adaptation. Series 142P is engineered for high-performance production drilling where cycle times and hole quality are both critical.

Key Features

• Micrograin solid carbide construction for hardness and wear resistance at elevated cutting speeds
• Ti-NAMITE-X coating reduces friction and extends tool life across a broad range of materials
• 135-degree split point with web thinning for self-centering entry and reduced thrust force
• Coolant-through design compatible with through-spindle coolant delivery systems
• Screw machine length (3-1/2 inches OAL) provides added rigidity over jobber-length bits
• Four-margin geometry improves hole roundness and surface finish
• DIN 6537 specification compliance for dimensional consistency

Compatibility

Designed as an OEM-style production drill bit for use in standard drill chucks and collet holders accepting a 0.390 inch straight-cylindrical shank. Fits drill presses, CNC machining centers, and manual mills configured for screw machine length tooling. No specific model compatibility was stated in the product data.

Installation Notes

Installation and operation should be performed by qualified machinists familiar with cutting tool setup and CNC or manual machine operation. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit from the chuck or collet. Verify shank seating depth and runout before beginning a production run. Consult your machine tool manufacturer guidelines and applicable shop safety standards when setting feed rates and spindle speeds for carbide tooling.