Kennametal 4150337 Screw Machine Drill Bit 9/16 in Carbide

Product Description

The KENNAMETAL 4150337 is a stub-length (screw machine length) drill bit designed for high-performance drilling in metalworking applications. Built from solid carbide and coated with TiAlN (TiN tip), it delivers extended tool life in demanding production environments. The 140-degree point angle reduces thrust force and improves chip evacuation. With an overall length of 4.5276 inches and a 9/16-inch cutting diameter, this bit fits standard CNC machining centers and drill presses. The tapered web and regular spiral flutes promote efficient chip flow. Qualified machinists and tool-room technicians specify this series for tight-tolerance drilling in steel, stainless, and cast iron.

This drill bit is suited for stub-length drilling operations in production machining, job shops, and tool rooms. Its 3xD flute-to-diameter ratio and 1.7717-inch maximum drilling depth make it appropriate for through-holes and blind holes in short-reach setups. The straight cylindrical shank accommodates standard drill chucks and collet holders. It conforms to DIN 6537K specifications, making it compatible with metric toolholding systems and inch-dimension fixturing alike.

Key Features

• Solid carbide construction for rigidity and heat resistance in ferrous and nonferrous materials
• TiAlN multilayer coating with TiN tip for extended wear resistance and reduced built-up edge
• 140-degree standard point angle minimizes thrust and improves hole entry accuracy
• Regular spiral flute design promotes consistent chip evacuation in stub-depth applications
• Tapered web configuration adds core strength without sacrificing cutting efficiency
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed as an OEM-style solid carbide stub drill for use in standard drill chucks and collet toolholders accepting a 0.6299-inch straight cylindrical shank. Part of the KENNAMETAL B041A-CPG series.

Installation Notes

Installation and tool changes should be performed by qualified machinists following shop safety procedures. Ensure the machine spindle is fully powered down and locked out before changing tooling. Secure the shank fully within the collet or chuck to the recommended engagement depth per the toolholder manufacturer. Inspect the cutting edges and coating condition before each use; do not run a chipped or worn carbide drill at full feed rates.