Kennametal 4149156 Solid Carbide Jobber Drill Wire 40

Product Description

The KENNAMETAL 4149156 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding industrial and machining applications. Manufactured to DIN 6537K standards, this wire gauge size 40 drill measures 0.0980 inches in diameter and features a 140-degree point angle optimized for fast penetration and accurate hole location. A multilayer TiAlN coating provides elevated heat resistance and extended tool life when cutting at high surface speeds. The straight cylindrical shank measures 0.3125 inches in diameter and the overall length is 2.2835 inches. Right-hand cutting with a regular spiral flute geometry, this drill is suited for CNC machining centers and precision drilling operations requiring consistent diameter tolerance of -0.0006 to 0.0000 inches.

This drill is intended for use in ferrous and non-ferrous materials including steel, stainless steel, cast iron, and aluminum. The coolant-through design supports internal coolant delivery, making it well-suited for deeper hole operations where chip evacuation and thermal management are critical. With a flute-to-diameter ratio of 5xD and a maximum drilling depth of 0.6693 inches, this tool fits short-run and production environments where dimensional accuracy and tool life are priorities. Machinists and toolroom technicians in aerospace, automotive, and general metalworking shops are the primary users.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• Multilayer TiAlN coating for high-temperature performance and extended tool life
• 140-degree point angle reduces thrust and improves hole entry accuracy
• Coolant-through capable for effective chip evacuation in deep or high-speed drilling
• DIN 6537K specification for consistent dimensional standards
• Diameter tolerance of -0.0006 to 0.0000 inches for precision fitment requirements

Compatibility

Designed as an OEM-style jobber drill compatible with straight-shank tool holders and drill chucks accepting a 0.3125-inch shank diameter. Suitable for use on CNC machining centers and drill presses where wire gauge size 40 tooling is specified.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the machine powered down and in a locked-out state per applicable lockout/tagout procedures. Ensure the tool holder or chuck is clean and free of debris before seating the shank. When using the coolant-through feature, verify coolant pressure and flow rate are within the machine spindle specifications before operation. Do not exceed the recommended drilling depth of 0.6693 inches per the 5xD flute ratio without retracting to clear chips.