Kennametal 4054510 Drill Bit Letter S 0.348 in Solid Carbide

Product Description

The KENNAMETAL 4054510 is a stub-length (screw machine length) solid carbide drill bit designed for high-productivity drilling in metal fabrication, machining, and industrial manufacturing environments. Sized at Letter S (0.3480 inches diameter), it features a 140-degree split-point geometry and a multilayer TiAlN coating that extends tool life in abrasive and hard-material applications. The straight cylindrical shank measures 0.3937 inches in diameter, and the overall length is 3.5039 inches. Coolant-through capability supports high-speed drilling operations where heat management is critical. This bit is installed by machinists and tool-and-die professionals on CNC machining centers and drill presses.

The 4054510 is suited for short-reach drilling applications where rigidity and runout control matter. The stub flute length of 1.8504 inches and a maximum drilling depth of 1.3780 inches make it appropriate for through-hole and blind-hole work in close-tolerance setups. The 3xD flute-to-diameter ratio and tapered web configuration help with chip evacuation in steel, cast iron, and similar ferrous materials. This bit conforms to DIN 6537K specification, making it a recognized standard in precision machining environments.

Key Features

• Letter S diameter (0.3480 inches) with a tolerance of +0.006 to +0.021 mm for close-tolerance drilling
• 140-degree standard point angle reduces thrust and improves hole entry accuracy
• Multilayer TiAlN coating increases heat resistance and extends tool life in hard and abrasive materials
• Coolant-through design supports high-speed, high-feed drilling operations
• Straight cylindrical shank (0.3937 inches) fits standard collets and drill chucks
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers, drill presses, and multi-spindle machines accepting straight-shank drill bits in the 0.3000 to 0.3500 inch diameter range, per DIN 6537K specification.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify collet or chuck bore matches the 0.3937-inch shank diameter before seating the bit. When using coolant-through capability, confirm the machine coolant system is properly pressurized and that the coolant path is clear before starting the cut.