Kennametal 4151134 Screw Machine Drill Bit 5mm Carbide

Product Description

The KENNAMETAL 4151134 is a screw machine length (stub) drill bit engineered for high-performance drilling in metal and hard materials. Built from solid carbide and coated with a multilayer TiAlN finish at the tip, this bit delivers extended tool life and thermal resistance in demanding production environments. It features a 5.00 mm diameter, a 140-degree point angle for reduced thrust and self-centering entry, and a 2-flute regular spiral design for efficient chip evacuation. Overall length is 66.00 mm (2.5984 inches) with a 6.00 mm straight cylindrical shank. Coolant-through capability makes it well-suited for deep-hole and high-speed machining operations. Installation is performed by machinists and tool-and-die professionals on CNC machines and drill presses.

This drill bit is designed for stub-length drilling applications where rigidity and precise hole location are priorities. The short overall length reduces deflection, making it a preferred choice in CNC turning centers, machining centers, and screw machine operations. The 3xD flute-to-diameter ratio supports controlled chip flow in steel, stainless, cast iron, and similar workpiece materials. The DIN 6537K specification ensures dimensional consistency across tooling setups. This bit is sold individually (package quantity of 1) and is part of the KENNAMETAL B051A-CPG series.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• TiAlN multilayer coating at tip for thermal resistance and extended tool life
• 140-degree point angle reduces entry thrust and promotes self-centering
• Coolant-through design supports high-speed and deep-hole drilling applications
• Tapered web configuration improves strength at the drill point
• DIN 6537K compliant for dimensional standardization

Compatibility

Designed as a direct-fit tooling option for CNC machining centers, turning centers, and screw machines accepting a 6.00 mm straight cylindrical shank per DIN 6537K standards. Part of the KENNAMETAL B051A-CPG series.

Installation Notes

This drill bit is installed and serviced by machinists and CNC setup technicians. Ensure the machine spindle and tool holder are powered down and locked out before changing tooling. Verify shank diameter compatibility with the collet or chuck before seating the bit. Use the manufacturer-recommended coolant flow rate when engaging the coolant-through feature to prevent thermal damage and promote chip clearing.