Kennametal 4149605 Taper Length Drill Bit 3.8 Mm Carbide

Product Description

The KENNAMETAL 4149605 is a taper length solid carbide drill bit in the B053A-CPG series, designed for precision drilling in demanding metalworking and machining applications. It features a 3.8 mm diameter, a 140-degree standard point, and a multilayer TiAlN coating that extends tool life in high-temperature cutting environments. The straight cylindrical shank measures 6 mm in diameter. With coolant-through capability, this bit maintains cutting performance during deep-hole operations. It is installed by machinists and tool-and-die professionals working with CNC machining centers and precision drill presses.

This drill bit is suited for precision hole-making in ferrous and non-ferrous metals where tight diameter tolerances and extended reach are required. The 8xD flute-length-to-diameter ratio and tapered web configuration make it appropriate for deep drilling applications in production and job-shop environments. The right-hand spiral flute promotes effective chip evacuation throughout the cut. Conforming to DIN 6537K, it fits standard straight-shank toolholders used in automated and manual machining setups.

Key Features

• Solid carbide construction in material grade KC7325 for rigidity and wear resistance
• Multilayer TiAlN coating for high-temperature and abrasion resistance
• 140-degree standard point angle for accurate self-centering entry
• Coolant-through design supports chip removal in deep-hole drilling
• Right-hand spiral flute with regular spiral type promotes consistent chip flow
• Tapered web configuration reduces cutting forces at depth
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed as an OEM-style replacement or direct-fit tooling solution for straight-shank drill holders accepting a 6 mm shank diameter in CNC machining centers and conventional drill presses.

Installation Notes

Installation is performed by qualified machinists. Ensure the spindle and coolant supply are fully powered down and depressurized before changing tooling. Seat the straight cylindrical shank fully and evenly in a collet or drill chuck rated for the shank diameter before tightening. Verify coolant-through passages are clear and flow is confirmed before beginning production drilling.