Kennametal 4151082 Screw Machine Drill Bit 3.05 Mm

Product Description

The KENNAMETAL 4151082 is a screw machine length drill bit designed for high-precision hole-making in tight-tolerance machining applications. Built from solid carbide and coated with TiN at the tip, this bit delivers extended tool life and improved wear resistance compared to high-speed steel alternatives. The 140-degree split point reduces walking and minimizes thrust force at entry. With a 3.05 mm cutting diameter and an overall length of 62 millimeters, it fits standard CNC machining centers, drill presses, and screw machine setups. Coolant-through capability supports chip evacuation and heat management in deeper drilling operations.

This drill bit is suited for production machining environments where consistency and tool life matter. The screw machine length format provides added rigidity over jobber-length bits, making it a practical choice for high-cycle drilling in metals and engineered materials. The straight cylindrical shank with a 6 millimeter diameter seats securely in standard collets and drill chucks. It is typically installed and used by machinists, tool-and-die professionals, and CNC operators working in job shops, aerospace, automotive, and general manufacturing settings.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding materials
• TiN tip coating reduces friction and extends cutting edge life
• 140-degree point angle minimizes drill walk and reduces entry burring
• Coolant-through design aids chip evacuation and thermal control during deep drilling
• Screw machine length provides greater rigidity than jobber-length bits
• Regular spiral flute geometry promotes consistent chip flow

Compatibility

Part of the KENNAMETAL B051CPG series, designed for use in standard collet chucks and drill chucks accepting a 6 millimeter straight cylindrical shank. Intended for screw machine and CNC drilling applications within the 0.1000 to 0.1500 decimal inch drill bit size range.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the shank. Confirm the collet or chuck is rated for the 6 millimeter shank diameter and tighten to the tool holder manufacturer specifications. When using the coolant-through feature, verify coolant line pressure and flow rate are appropriate for the workpiece material before cycling the machine.