Kennametal 4151135 Screw Machine Drill Bit 5.10mm

Product Description

The KENNAMETAL 4151135 is a solid carbide screw machine length drill bit designed for high-performance drilling in metalworking and machining applications. Built to DIN 6537K specification, it features a 140-degree point angle for aggressive, self-centering entry and a multilayer TiAlN coating at the tip to extend tool life under high heat and friction. With a 5.10 mm diameter and a compact 66.00 mm overall length, this stub-length drill delivers rigidity and accuracy in tight-clearance setups. The 2-flute regular spiral design paired with coolant-through capability makes it suitable for production environments where chip evacuation and heat management are critical.

This drill bit is suited for CNC machining centers, drill presses, and screw machine applications in manufacturing and toolroom environments. The straight cylindrical shank and 6.00 mm shank diameter allow secure chuck or collet retention. Its stub-length format reduces deflection, making it a reliable choice for precision hole-making in ferrous metals, alloys, and other materials common to production machining. Professional machinists and toolroom technicians are the primary users of this tooling.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding machining operations
• 140-degree point angle promotes accurate self-centering and reduces thrust force on entry
• Multilayer TiAlN tip coating improves heat resistance and extends tool life
• Coolant-through design supports chip evacuation and thermal management during deep cuts
• DIN 6537K specification ensures dimensional consistency and interchangeability
• 3xD flute-to-diameter ratio with tapered web configuration for balanced chip flow and core strength

Compatibility

Designed as an OEM-style replacement and standard production drill bit within the KENNAMETAL B051A-CPG series for screw machine length drilling applications requiring a 5.10 mm diameter in the 5.00 to 6.50 mm size range.

Installation Notes

This tooling is installed and changed by qualified machinists or toolroom technicians. Before changing or setting this drill bit, power down the spindle and confirm the machine is in a safe, locked-out state per your facility lockout/tagout procedures. Secure the straight shank in a properly sized collet or drill chuck to the tool manufacturer's recommended clamping torque for the holder type in use. Verify coolant-through passages are clear and coolant flow is confirmed before initiating a production cycle.