Kennametal 4054505 Drill Bit Letter a Solid Carbide Tialn

Product Description

The KENNAMETAL 4054505 is a screw machine length (stub) drill bit designed for precision drilling in metalworking and machining applications. Built from solid carbide and coated with a multilayer TiAlN finish, this bit delivers hardness and heat resistance needed for demanding materials. It cuts in a right-hand direction with a 140-degree split-point geometry and two regular spiral flutes, providing self-centering action and efficient chip evacuation. The straight cylindrical shank measures 0.2362 inches in diameter, and the overall length is 2.5984 inches. This is a Series B976A tool conforming to DIN 6537K specification.

This drill bit is suited for CNC machining centers, screw machines, and manual drilling operations where short, rigid tooling is required to minimize deflection and maximize positional accuracy. The stub-length body reduces overhang, making it appropriate for high-feed-rate applications in steel, cast iron, stainless, and other ferrous and non-ferrous alloys. Coolant-through capability allows internal delivery of cutting fluid directly to the cutting edge, extending tool life in production environments. It is typically used by machinists and toolroom technicians in production shops, job shops, and maintenance machining operations.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• Multilayer TiAlN coating provides thermal barrier and oxidation resistance at elevated cutting temperatures
• 140-degree standard point angle for self-centering entry and reduced thrust force
• Coolant-through design delivers cutting fluid internally to the drill tip
• Stub length body minimizes deflection for tight-tolerance hole location
• Conforms to DIN 6537K specification for consistent dimensional standards

Compatibility

Designed as a Series B976A screw machine length drill bit for use in toolholders and chucks accepting a straight cylindrical shank with a 0.2362-inch shank diameter, compatible with standard CNC and manual drilling setups requiring a Letter A or 0.2340-inch nominal bore diameter.

Installation Notes

Installation should be performed by qualified machinists following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Secure the straight shank in a precision drill chuck or collet holder to the appropriate holding depth using proper tooling torque practices per machine manufacturer guidelines. Verify coolant-through connections are properly engaged before running at operating speed if internal coolant is used.