Kennametal 4150641 Solid Carbide Jobber Drill 3.50mm

Product Description

The KENNAMETAL 4150641 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding industrial and trade applications. Built to DIN 6537K standards, it features a 3.50 mm (0.1378 inch) diameter, a 140-degree point angle, and a multilayer TiAlN coating that extends tool life in abrasive and heat-generating cuts. The overall length is 66.00 mm (2.598 inches), with a 28.00 mm (1.102 inch) flute length and a 6 mm (0.219 inch) straight cylindrical shank. The two-flute regular spiral geometry promotes chip evacuation during through-hole and blind-hole operations. Machinists, maintenance technicians, and fabrication shops install this bit in CNC machining centers and handheld drilling equipment.

This drill is suited for cutting steel, stainless steel, cast iron, aluminum, and other non-ferrous materials. The 5xD flute-to-diameter ratio and tapered web configuration make it appropriate for precision hole-making where dimensional tolerance control is critical. The maximum drilling depth is 23.00 mm (0.906 inches). It is a practical choice for production environments requiring consistent, repeatable results across a range of workpiece materials. No coolant-through capability is present on this model, so external coolant or cutting fluid should be applied where thermal management is required.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• Multilayer TiAlN coating increases surface hardness and thermal resistance
• 140-degree point angle reduces thrust and improves centering on entry
• Two-flute regular spiral geometry promotes efficient chip evacuation
• DIN 6537K specification ensures standardized dimensional accuracy
• Straight cylindrical shank fits standard drill chucks and collet holders

Compatibility

Compatible with workpiece materials including steel, stainless steel, cast iron, aluminum, and non-ferrous alloys. Designed as a DIN 6537K-compliant solid carbide jobber drill for use in standard drill chucks and collet systems accepting a 6 mm straight shank.

Installation Notes

This drill bit is installed and serviced by machinists and maintenance technicians using standard chuck or collet toolholding equipment. Ensure the machine spindle is fully powered down and the chuck is secure before seating or removing the bit. Because this model has no coolant-through capability, apply external cutting fluid or coolant at the cutting zone to manage heat in ferrous and stainless steel applications. Inspect the cutting edges for wear or chipping before each use, as carbide tooling can fracture if operated with a damaged edge.