Kennametal 4151104 Carbide Screw Machine Drill Bit Tin

Product Description

The KENNAMETAL 4151104 is a solid carbide screw machine length drill bit engineered for high-productivity drilling in metalworking and machining applications. Built on the B051A series platform, it features a 140-degree drill point angle for accurate self-centering entry and reduced thrust on harder materials. The bit delivers coolant-through capability, channeling cutting fluid directly to the cutting zone to extend tool life and improve chip evacuation in deep-hole operations. A TiN tip coating adds surface hardness at the cutting edge. Right-hand cutting geometry and a standard straight shank make it compatible with conventional drill chucks and collet systems. This tool is intended for installation and use by machinists and CNC operators working in production environments.

This screw machine length drill bit is suited for production drilling in ferrous and non-ferrous metals where shorter flute length provides rigidity and reduced deflection. The coolant-through design makes it particularly effective in CNC machining centers and automated drilling stations where through-spindle coolant is available. Its compact stub-length profile reduces overhang, improving hole location accuracy in high-cycle operations. Machinists and tool crib technicians working in job shops, aerospace, automotive, and general manufacturing will find this geometry practical for repetitive drilling cycles.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• Coolant-through design channels fluid directly to the cutting edge for chip control and thermal management
• 140-degree drill point angle reduces thrust and improves self-centering on entry
• TiN tip coating increases surface hardness at the cutting zone
• Right-hand, 2-flute regular spiral geometry for standard drilling operations
• Straight shank fits standard drill chucks and collet holders

Compatibility

Designed as an OEM-style solid carbide screw machine length drill for use in CNC machining centers and conventional drill presses equipped with through-spindle or external coolant delivery systems.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and locked out before inserting or removing the drill bit from the holder. Verify shank seating depth and runout with a dial indicator before commencing production drilling. Consult the machine tool manufacturer specifications for recommended RPM and feed rates appropriate to the workpiece material.