Kennametal 4150717 Jobber Drill Bit 8.43mm Carbide Tin

Product Description

The KENNAMETAL 4150717 is a solid carbide jobber length drill bit designed for precision hole-making in metal, composites, and other hard materials. It measures 8.43 mm (0.2610 inches) in diameter with a 140-degree split-point tip that reduces walking and improves entry accuracy on flat and curved surfaces. The titanium nitride (TiN) coating extends tool life by increasing surface hardness and reducing friction. At 3.5827 inches overall length with a 2.0866-inch flute, this bit fits standard drill chucks and CNC machining centers. It is suited for production environments where consistent hole quality and tool longevity are priorities.

This drill bit is used in metalworking and machining applications where tight tolerances and clean hole finishes are required. The right-hand cut, regular spiral flute design handles general-purpose drilling in ferrous and non-ferrous metals, engineering plastics, and composite materials. It is commonly deployed in job shop, maintenance, and light manufacturing settings. The straight shank is compatible with standard drill chucks and collet-style tool holders used in both manual drill presses and CNC equipment.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• TiN coating increases surface hardness and extends tool life
• 140-degree point angle improves self-centering and reduces thrust force
• Right-hand cut with regular spiral flute for efficient chip evacuation
• Straight shank fits standard drill chucks and collet holders
• 6xD flute-to-diameter ratio supports drilling up to 43.00 mm depth

Compatibility

Designed as a jobber length drill bit for use in standard drill chucks and collet-style tool holders on drill presses, lathes, and CNC machining centers accepting an 8 mm straight shank.

Installation Notes

Installation is performed by machinists and tool-and-die professionals. Secure the straight shank firmly in a collet or chuck before operation and verify runout with a dial indicator when close tolerances are required. Power down and de-energize all spindle drives before changing tooling. Do not exceed the rated maximum drilling depth of 43.00 mm to avoid deflection or breakage.