Kennametal 4149194 Jobber Drill Wire 21 Solid Carbide

Product Description

The KENNAMETAL 4149194 is a solid carbide jobber-length drill bit designed for high-performance hole-making in demanding production environments. Wire size 21 (0.1590 inches), it features a 140-degree point angle for aggressive penetration with reduced thrust, a multilayer TiAlN coating for heat resistance and extended tool life, and a two-flute regular spiral geometry. Overall length is 2.9134 inches (74.00 mm) with a flute length of 1.4173 inches (36.00 mm). The straight cylindrical shank measures 0.6250 inches in diameter. Coolant-through capability supports high-speed drilling in materials where heat buildup is a concern. Licensed machinists and CNC operators are the primary installers.

This drill is rated for use in steel, stainless steel, cast iron, aluminum, and non-ferrous materials, making it well-suited for job shop and production floor applications. The 5xD flute-to-diameter ratio and tapered web configuration support chip evacuation in deeper holes up to a maximum drilling depth of 1.1417 inches (29.00 mm). The DIN 6537K specification designation confirms dimensional compliance with international tooling standards. This bit is appropriate for both manual and CNC machining centers where consistent, repeatable hole quality is required.

Key Features

• Wire size 21 (0.1590 inches) solid carbide construction for rigidity and wear resistance
• 140-degree point angle reduces thrust and improves hole entry accuracy
• Multilayer TiAlN coating enhances heat resistance and extends tool life in ferrous materials
• Coolant-through design for effective heat and chip management at depth
• Right-hand cutting, regular spiral flute, tapered web for reliable chip evacuation
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed for use in CNC machining centers and conventional drill presses accepting a 0.6250-inch straight cylindrical shank. Suitable for drilling steel, stainless steel, cast iron, aluminum, and non-ferrous workpieces within the 0.1500 to 0.2000 inch drill bit size range.

Installation Notes

Installation is performed by machinists or CNC technicians using a standard drill chuck or collet system sized for the 0.6250-inch straight shank. Verify spindle and workpiece are secure before initiating a cut. When using coolant-through capability, confirm coolant lines are connected and flow is confirmed before running the spindle. Inspect the cutting edges for wear or chipping before each use; carbide tooling is brittle and susceptible to damage from improper handling or interrupted cuts.