Kennametal 4151659 Drill Bit Size 33 Solid Carbide

Product Description

The KENNAMETAL 4151659 is a screw machine length (stub) drill bit designed for high-performance drilling in metal and hard materials. Built from solid carbide and coated with TiN at the tip, this bit delivers extended tool life and dimensional consistency in demanding production environments. It carries a Size 33 wire gauge diameter of 0.1130 inches, a 140-degree point angle for self-centering entry and reduced thrust, and a right-hand cutting direction with a regular spiral flute geometry. Licensed machinists, tool-and-die professionals, and CNC setup technicians are the primary users of this type of tooling.

This drill bit is suited for stub-length drilling applications where minimal overhang and maximum rigidity are required. The short overall length of 2.2835 inches reduces deflection in tight-clearance setups and screw machine operations. The straight cylindrical shank at 0.1575 inches diameter seats directly in standard drill chucks and collet holders. It conforms to DIN 6537K specification and belongs to the B041A-CPG series, making it a recognized standard in precision metalworking and production drilling contexts.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• TiN tip coating for improved surface hardness and heat resistance at the cutting edge
• 140-degree standard point angle reduces walking and lowers axial thrust
• Stub length design minimizes deflection and increases stiffness in close-tolerance work
• Tapered web configuration supports chip evacuation through the 0.6693-inch flute length
• Conforms to DIN 6537K specification for dimensional standardization

Compatibility

Designed as an OEM-style screw machine length drill bit conforming to DIN 6537K standards, compatible with standard drill chucks and collet holders accepting a 0.1575-inch straight cylindrical shank.

Installation Notes

Installation and use of this tooling should be performed by qualified machinists or CNC operators familiar with carbide tooling requirements. Ensure the machine spindle and chuck or collet are clean and properly torqued before seating the shank. Solid carbide bits are brittle compared to high-speed steel and should not be subjected to lateral loading or interrupted cuts without confirming suitability. Follow applicable shop safety standards and machine manufacturer guidelines for RPM and feed rate selection.