Walter-titex 6618338 Solid Carbide Jobber Drill Bit 0.248 in

Product Description

The WALTER-TITEX 6618338 is a solid carbide jobber length drill bit designed for high-performance drilling in demanding materials including cast iron, non-ferrous metals, steel, superalloys, and titanium. It carries a TiAlN coating to resist heat and extend tool life under aggressive cutting conditions. The drill features a 140-degree point angle, a two-flute spiral configuration, and a whistle notch shank for secure toolholder engagement. With a 0.248-inch cutting diameter and an overall length of 3.5827 inches, this bit is suited for precision hole-making where tight tolerances and tool rigidity are critical. It is typically installed by machinists and CNC operators in production and job-shop environments.

This drill bit is built for blind hole applications and stack drilling operations where consistent chip evacuation and point stability are essential. The DC150 series designation places it within a purpose-engineered line for difficult-to-machine workpiece materials. The 5xD flute-to-diameter ratio supports adequate chip clearance at standard jobber depths. Coolant-through capability allows internal coolant delivery directly to the cutting zone, making it well-suited for machining centers equipped with through-spindle coolant systems. It is appropriate for both high-volume production and precision prototype work in aerospace, automotive, and general metalworking applications.

Key Features

• Solid carbide construction provides rigidity and wear resistance in hard and abrasive workpiece materials
• TiAlN coating extends tool life by improving heat resistance at the cutting edge
• 140-degree drill point angle suited for self-centering entry on flat and curved surfaces
• Coolant-through design delivers cutting fluid directly to the tip for heat control and chip flushing
• Whistle notch shank ensures positive drive and prevents bit rotation in the holder
• Rated for blind hole and stack drilling applications across a broad range of metallic workpiece materials

Compatibility

Designed as an OEM-specification tooling replacement in the WALTER-TITEX DC150 series, suitable for CNC machining centers and drill presses with toolholders that accept a 0.315-inch whistle notch shank. Rated for workpiece materials coded K (cast iron), N (non-ferrous), P (steel), and S (superalloys and titanium) per ISO material classification.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and machine power is in a safe state before loading or changing tooling. Confirm the toolholder bore matches the 0.315-inch shank diameter and that the whistle notch is properly aligned with the drive key before tightening. When using coolant-through capability, verify the machine spindle coolant system is enabled and operating at the pressure recommended by the machining center manufacturer before beginning the drilling cycle.