Kennametal 4151645 Screw Machine Drill Bit 2.30mm Carbide

Product Description

The KENNAMETAL 4151645 is a screw machine length (stub) solid carbide drill bit designed for high-precision drilling in demanding machining environments. Built to DIN 6537K specifications, it features a 2.30 mm (0.0906 inch) diameter with a 140-degree split point for accurate entry and reduced thrust. The multilayer TiAlN coating at the tip extends tool life in ferrous and non-ferrous materials. With an overall length of 58.00 mm (2.2835 inches) and a straight cylindrical shank of 4.00 mm (0.1575 inch) diameter, this bit is suited for CNC machining centers, drill presses, and screw machine operations where rigidity and repeatability are critical.

This drill bit is intended for use in precision machining applications including production drilling, screw machine work, and short-hole drilling operations. The stub length geometry increases rigidity over jobber-length equivalents, making it well suited for tight setups and high-feed-rate drilling in machine shops and manufacturing environments. It is typically installed and used by machinists and CNC operators working with metal components requiring tight hole tolerances.

Key Features

• Solid carbide construction for high rigidity and wear resistance in hard materials
• 140-degree standard point angle for precise entry and reduced walking
• Multilayer TiAlN coating at tip for extended tool life and heat resistance
• Stub (screw machine) length at 58.00 mm OAL for improved rigidity in short setups
• Straight cylindrical shank compatible with standard drill chucks and collets
• Right-hand spiral flute with tapered web for efficient chip evacuation
• Meets DIN 6537K specification for dimensional consistency

Compatibility

Designed as an OEM-style replacement and production drill bit in the KENNAMETAL B041A-CPG series, suited for standard drill chucks and collets accepting a 4.00 mm straight shank diameter.

Installation Notes

Installation is performed by machinists using a compatible drill chuck or collet system; ensure the shank is fully seated and secured before operation. Power down or de-energize the machine and engage all safety locks before changing tooling. Handle carbide tooling carefully to avoid chipping the cutting edge during setup. Follow applicable machine tool manufacturer guidelines and shop safety procedures when operating at rated speeds and feeds.