Kennametal 4151150 Screw Machine Drill Bit 6.20mm Carbide

Product Description

The KENNAMETAL 4151150 is a screw machine length (stub) drill bit engineered for precision hole-making in demanding machining environments. Built from solid carbide and coated with a multilayer TiAlN finish at the tip, this bit delivers extended tool life in ferrous and non-ferrous materials. It measures 6.20 mm in diameter with an overall length of 79.00 mm (3.1102 inches) and features a 140-degree standard point angle for accurate self-centering entry. Two regular spiral flutes with a tapered web configuration promote efficient chip evacuation. Coolant-through capability makes it well suited for high-speed CNC drilling operations where heat management is critical.

This drill bit is designed for stub-length drilling applications where rigidity and accuracy take priority over depth reach. The maximum drilling depth is 24.00 mm (0.9449 inches), making it appropriate for through-holes and shallow blind holes in precision machined components. It fits machining centers, CNC lathes, and gang drilling setups that require consistent, repeatable bore diameters. The straight cylindrical shank diameter of 8.00 mm fits standard drill chucks and collet systems. The Series B051A-CPG designation and DIN 6537K specification make this a recognized standard in industrial tooling. Machinists and CNC setup technicians working in job shops, aerospace, automotive, and general manufacturing environments will find this a reliable production drill.

Key Features

• Solid carbide construction for rigidity and wear resistance in production drilling
• Multilayer TiAlN tip coating extends tool life under high-speed cutting conditions
• 140-degree point angle promotes accurate entry and reduces walking on entry
• Coolant-through design supports high-feed machining and effective heat dissipation
• Tapered web configuration aids chip flow and reduces thrust force
• Conforms to DIN 6537K specification for interchangeable tooling standardization

Compatibility

Designed as an OEM-style replacement or production tooling option for CNC machining centers and drill presses requiring a stub-length solid carbide drill in the 5.00 to 6.50 mm diameter range per DIN 6537K specification.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify chuck or collet bore matches the 8.00 mm shank diameter before seating the bit to prevent runout. When using the coolant-through feature, confirm the machine tool coolant circuit is compatible and set to the appropriate flow rate for the material being drilled.