Kennametal 4151199 Screw Machine Drill Bit 9.80mm Carbide

Product Description

The KENNAMETAL 4151199 is a screw machine length (stub) solid carbide drill bit designed for high-performance drilling in demanding production environments. Built to DIN 6537K specification, it features a 140-degree point angle for aggressive penetration and reduced thrust in hard and abrasive materials. The TiAlN multilayer coating on the tip extends tool life in high-temperature cutting applications. At 89.00 mm overall length and 9.80 mm diameter, this right-hand, two-flute bit delivers consistent hole quality at a 3xD depth-to-diameter ratio. It is installed and operated by machinists, tool and die technicians, and production drilling professionals.

This drill bit is suited for stub-length drilling operations in CNC machining centers, manual drill presses, and production screw machine setups. The straight cylindrical shank with a 10.00 mm shank diameter seats securely in standard drill chucks and collet systems. The tapered web configuration and regular spiral flute promote chip evacuation in steel, stainless, cast iron, and other ferrous and non-ferrous alloys. Coolant-through capability supports internal coolant delivery, making it well matched for through-spindle coolant machine tools where heat management is critical.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• 140-degree point angle reduces thrust and improves self-centering on entry
• TiAlN tip coating extends tool life under high cutting temperatures
• Coolant-through design supports internal coolant delivery for deep-hole thermal management
• DIN 6537K specification ensures dimensional consistency and interchangeability
• 3xD flute-to-diameter ratio provides a short, stiff geometry that minimizes deflection

Compatibility

Designed as an OEM-specification replacement or direct-use stub drill for CNC and production drilling applications requiring a 9.80 mm diameter, straight-shank, coolant-through solid carbide drill bit conforming to DIN 6537K.

Installation Notes

This bit is installed by machinists and CNC operators in drill chucks or collet tool holders rated for the 10.00 mm straight shank diameter. Ensure the machine spindle and coolant system are fully powered down and depressurized before changing tooling. Verify chuck or collet runout is within acceptable tolerance before use, as excessive runout accelerates carbide tool wear. Follow machine tool manufacturer guidelines for spindle speed and feed rate when setting up for the specific workpiece material.