Walter-titex 6618339 Carbide Jobber Drill Bit 1/4 in

Product Description

The WALTER-TITEX 6618339 is a solid carbide jobber length drill bit designed for high-performance drilling in demanding trade and industrial applications. Built to Series DC150 specifications, it features a 1/4 inch (0.2500 inch) diameter, a 140-degree drill point angle, and a TiAlN coating that extends tool life under high heat and friction. The whistle notch shank provides positive drive engagement. At 3.583 inches overall length with a 1.25 inch flute length, this bit is sized for compact yet productive drilling work. Coolant-through capability supports chip evacuation in deep or blind hole operations. Licensed machinists and toolroom professionals are the primary users.

This drill bit is suited for drilling cast iron, non-ferrous metals, steel, superalloys, and titanium. It performs in blind hole and stack drilling scenarios where point accuracy and chip control are critical. The 5xD flute-to-diameter ratio supports efficient cutting in both production and maintenance environments. The right-hand spiral flute geometry promotes consistent chip removal across these varied workpiece materials.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• TiAlN coating reduces heat buildup and extends cutting edge life
• 140-degree proprietary point type for accurate entry and reduced thrust force
• Coolant-through design aids chip evacuation in blind hole and stack drilling
• Whistle notch shank provides positive rotational drive in compatible holders
• Meets ANSI and ISO standards with ISO specification designation

Compatibility

Designed for use in WALTER-TITEX DC150 series tooling systems. Compatible workpiece materials include cast iron, non-ferrous metals, steel, superalloys, and titanium. Shank diameter is 0.3150 inch (8.00 mm); verify holder bore before installation.

Installation Notes

Installation is performed by machinists or toolroom technicians using compatible toolholders rated for the 0.3150 inch whistle notch shank. Confirm spindle speed and feed rate against the DC150 series cutting data recommendations before use. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit. Do not use this bit in hand-held drill applications; it is intended for machine tool use only.