Kennametal 4149598 Taper Length Drill Bit No 29

Product Description

The KENNAMETAL 4149598 is a solid carbide taper length drill bit designed for precision hole-making in demanding machining applications. Built to DIN 6537K specification, it features a 140-degree standard point angle and a multilayer TiAlN coating that extends tool life in abrasive and high-temperature cutting conditions. The bit measures 0.1360 inches (No. 29 wire gauge) in drill diameter, with a 1.5748-inch flute length and a 3-inch overall length. The KC7325 carbide grade and tapered web configuration make it well suited for high-productivity drilling in ferrous and non-ferrous materials where consistent hole geometry matters.

This drill bit is intended for use in machine-shop and production environments where wire-gauge-size holes are required in metal components. The straight cylindrical shank with a 0.2362-inch diameter seats directly in standard collet chucks or drill chucks. The 8xD flute-length-to-diameter ratio supports deeper hole entry, and the coolant-through design allows internal coolant delivery to the cutting zone, which helps manage chip evacuation and heat at the tip during extended drilling cycles.

Key Features

• Solid carbide construction in KC7325 grade for rigidity and wear resistance in metal drilling
• Multilayer TiAlN coating reduces thermal wear and extends tool life in dry and semi-dry cutting
• 140-degree standard point angle provides clean entry and reduces thrust force
• Coolant-through design supports internal coolant delivery for chip evacuation and heat control
• Tapered web configuration adds core strength without sacrificing chip flow
• DIN 6537K specification ensures consistent dimensional standards for drop-in replacement use

Compatibility

Designed as an OEM-style replacement drill bit for CNC machining centers and drill presses using straight-shank collet or drill chuck toolholders accommodating a 0.2362-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the tool changer or chuck is in a safe state before seating or removing the bit. Verify shank engagement depth in the collet meets shop standards before torquing the chuck. When using coolant-through capability, confirm that the toolholder and spindle coolant passages are clean and properly connected before beginning the cut.