Kennametal 2658220 Solid Carbide Jobber Drill Letter Q

Product Description

The KENNAMETAL 2658220 is a solid carbide jobber-length drill bit in Letter Q size (0.3320 inches diameter), designed for high-performance drilling in demanding industrial and machining applications. Featuring a 140-degree split point with web thinning and a TiAlN (titanium aluminum nitride) coating, this drill reduces thrust force on entry and extends tool life in abrasive and heat-intensive cutting conditions. The right-hand, regular spiral flute geometry promotes efficient chip evacuation. Overall length is 4.0551 inches with a 2.4016-inch flute length and a 0.3937-inch straight cylindrical shank. Coolant-through capability supports high-speed, deep-hole drilling operations. Manufactured to DIN 6537L specification.

This drill is suited for production machining environments where precision and tool longevity are critical. Primary workpiece materials include steel, stainless steel, cast iron, aluminum, and other non-ferrous metals. The coolant-through design makes it appropriate for CNC machining centers and drill presses where internal coolant delivery is available. Maximum drilling depth reaches 1.9290 inches, making it a practical choice for through-hole and moderate-depth blind-hole applications across metal fabrication, aerospace, automotive, and general manufacturing operations.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• TiAlN coating reduces heat buildup and extends cutting life in steel and stainless steel
• 140-degree point angle with web thinning for reduced entry thrust and improved centering
• Coolant-through design supports high-speed drilling and chip flushing in deep holes
• Right-hand regular spiral flute promotes consistent chip evacuation
• Straight cylindrical shank (0.3937 inches) for compatibility with standard drill chucks and collets
• Manufactured to DIN 6537L specification for dimensional consistency

Compatibility

Designed for use in CNC machining centers, drill presses, and other machine tool setups capable of accepting a 0.3937-inch straight shank. Suitable for drilling steel, stainless steel, cast iron, aluminum, and non-ferrous workpiece materials.

Installation Notes

Installation and tool changes should be performed by qualified machinists or tooling technicians with the machine powered down and locked out per applicable safety procedures. Ensure the shank is fully seated and properly torqued in the chuck or collet before operation. When using the coolant-through feature, verify coolant pressure and flow rate are within the machine's specified range before beginning a drilling cycle. Inspect the drill point for wear or chipping before each use, as carbide tooling is brittle and should not be used if the cutting edge is damaged.