Walter-titex 5060521 Cobalt Drill Bit Letter E 1/4 in

Product Description

The WALTER-TITEX 5060521 is a cobalt jobber-length drill bit sized at Letter E (0.2500 inches, 1/4 inches) with a 130-degree split point and a parabolic flute profile. It belongs to the Series A1247 and is oxide coated for added wear resistance. With an overall length of 3-31/32 inches and a flute length of 2-1/2 inches, this bit is engineered for high-performance drilling in demanding materials including stainless steel, cast iron, superalloys, and titanium. The straight-cylindrical shank (1/4 inches diameter) suits standard drill chucks used across trade and production environments. Licensed machinists, tool-and-die technicians, and industrial maintenance professionals are the primary users.

This drill bit is suited for blind hole drilling and stack drilling applications in ferrous and non-ferrous metals. Its parabolic flute geometry promotes efficient chip evacuation in deep-hole work, supporting a maximum drilling depth of approximately 2.047 inches. The 8xD flute-to-diameter ratio makes it appropriate for applications where standard jobber bits fall short in chip clearance. It performs well in steel, cast iron, non-ferrous metals, stainless steel, and superalloys and titanium, making it a practical choice for aerospace, automotive, and heavy industrial maintenance work. It meets ANSI and ISO standards and carries BS and DIN specification designations.

Key Features

• Cobalt construction with oxide coating for heat and wear resistance in hard materials
• 130-degree split point reduces walking and lowers thrust force at entry
• Parabolic flute profile accelerates chip removal in blind hole and stack drilling
• Web-thinned, tapered web configuration improves cutting efficiency and reduces torque
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Meets ANSI and ISO standards with BS and DIN specification designations

Compatibility

Designed for use in standard drill chucks and collet systems accepting a 1/4-inch straight-cylindrical shank. Rated for primary workpiece materials including cast iron, non-ferrous metals, stainless steel, carbon and alloy steel, and superalloys and titanium (material codes K, M, N, P, S). Suitable for blind hole and stack drilling operations.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with metal cutting operations. Ensure the drill chuck or collet is fully tightened and the workpiece is securely fixtured before operation. Coolant-through capability is not supported on this bit, so adequate external coolant or cutting fluid application is recommended when drilling stainless steel, superalloys, or titanium to manage heat buildup. Inspect the cutting edges for wear before each use and replace when point geometry degrades to avoid workpiece damage or tool breakage.