Sgs 66447 Screw Machine Drill Bit 23/64 in Solid Carbide

Product Description

The SGS 66447 is a screw machine length drill bit designed for high-performance drilling across a wide range of materials. Built from micrograin solid carbide and coated with Ti-NAMITE-X, it delivers extended tool life and resistance to heat buildup under demanding cutting conditions. The bit measures 23/64 inches (0.3031 inches decimal) in diameter with a 135-degree split point and a 3-1/2 inch overall length. The web-thinned point reduces thrust force at entry and improves centering accuracy. With coolant-through capability and a 4-margin straight-cylindrical shank, this bit is engineered for precision hole-making in production and maintenance environments. It is suited for CNC machining centers, drill presses, and manual operations requiring tight-tolerance holes.

The SGS 66447 is intended for use in metalworking, fabrication, and industrial maintenance applications. Its universal primary workpiece material rating makes it appropriate for ferrous metals, non-ferrous alloys, and similar materials encountered in general machining. The screw machine length profile, with a flute length of approximately 1.61 inches, provides rigidity in short-reach setups and minimizes deflection in production drilling. The straight-cylindrical shank accommodates standard drill chucks and collet systems. This bit fits applications where consistent hole diameter tolerance and finish quality are required across repeated operations.

Key Features

• Micrograin solid carbide construction for hardness and wear resistance
• Ti-NAMITE-X coating for extended tool life and reduced friction
• 135-degree split point with web thinning for reduced entry thrust and improved centering
• Coolant-through design supports internal coolant delivery in compatible setups
• 4-margin geometry improves hole roundness and surface finish
• Right-hand spiral flute with regular spiral type for efficient chip evacuation
• Conforms to DIN 6537 specification

Compatibility

Designed as a high-performance screw machine length drill bit compatible with standard drill chucks and collet systems accepting a 0.3900-inch straight-cylindrical shank. Suitable for CNC machining centers and manual drill setups across universal workpiece materials per Series 142P specification.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with rotating cutting tools. Ensure the machine spindle is fully stopped and the tool is securely seated in the chuck or collet before beginning a cut. When using the coolant-through feature, confirm that the machine tool's coolant circuit is rated for through-spindle delivery before engaging. Follow applicable shop safety standards and manufacturer guidelines for drill speed and feed rate selection based on workpiece material and machine capability.