Walter-titex 6618151 Screw Machine Drill Bit 13/32 in Carbide

Product Description

The WALTER-TITEX 6618151 is a solid carbide screw machine length drill bit designed for high-performance drilling in steel and cast iron. Built to Series DC150-03-A0 specifications, it features a 140-degree point angle and a TiNAl (titanium aluminum nitride) coating that extends tool life under demanding conditions. The bit measures 13/32 inches (0.4062 inches decimal) in diameter with a 4-inch overall length, making it well suited for short-hole drilling applications where rigidity and accuracy are critical. Licensed machinists, tool-and-die technicians, and industrial maintenance professionals are the primary users of this type of tooling.

This drill bit is rated for universal tool performance and is optimized for primary workpiece materials including steel and cast iron. Its screw machine length profile — shorter than jobber length — provides added rigidity and reduced deflection in CNC machining centers, drill presses, and manual machine tools. The 3-flute, regular spiral flute geometry improves chip evacuation and supports higher feed rates compared to standard 2-flute designs. The straight cylindrical shank (0.4720 inches diameter) fits standard collet chucks and drill chucks without modification. Maximum drilling depth is 1.2180 inches, consistent with the 3xD flute-by-diameter ratio of this series.

Key Features

• Solid carbide construction for rigidity and heat resistance in ferrous materials
• TiNAl coating extends tool life and reduces built-up edge on steel and cast iron
• 140-degree special point angle improves self-centering and reduces thrust load
• 3-flute regular spiral geometry enhances chip removal and allows higher feed rates
• Screw machine length (4 inches OAL) provides superior rigidity over jobber-length bits
• Straight cylindrical shank fits standard collet and drill chuck toolholders
• Conforms to DIN and ISO standards for dimensional consistency

Compatibility

Designed for use in steel and cast iron workpieces as an OEM-style replacement or standard tooling selection within the WALTER-TITEX DC150-03-A0 series, covering drill bit diameters in the 0.4000 to 0.4500 inch range (9.50 to 11.00 mm).

Installation Notes

This bit should be installed by a qualified machinist or maintenance technician familiar with rotating cutting tool safety. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify collet or chuck bore compatibility with the 0.4720-inch shank diameter before seating the bit. Do not exceed the recommended maximum drilling depth of 1.2180 inches per pass without retracting to clear chips, as this bit does not support coolant-through operation.