Kennametal 2403807 Screw Machine Drill Bit 8.30mm Carbide

Product Description

The KENNAMETAL 2403807 is a screw machine length drill bit engineered for high-performance drilling in metalworking applications. Built from solid carbide and coated with a multilayer TiAlN finish, this bit delivers extended tool life and heat resistance at elevated cutting speeds. It features an 8.30 mm diameter, a 140-degree standard point angle with web thinning, and an overall length of 89.00 mm (3.5039 inches). The straight cylindrical shank measures 10.00 mm in diameter and 40.00 mm in length. Right-hand cut with regular spiral flutes, this bit is suited for production and precision drilling environments where consistent hole quality is required.

This drill bit is designed for use in CNC machining centers, drill presses, and screw machine setups. Its stub length profile improves rigidity and reduces deflection in short-reach drilling operations. Primary workpiece materials include cast iron and steel. The DIN 6537K specification ensures dimensional conformance to recognized international tooling standards. Maximum drilling depth is rated at 35.00 mm, making it a reliable choice for through-hole and blind-hole work in ferrous metals across production shop and job shop environments. Installation and use are handled by machinists and CNC operators.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous metal drilling
• Multilayer TiAlN coating improves heat resistance and extends tool life at high cutting speeds
• 140-degree point angle with web thinning reduces thrust force and improves chip clearance
• Screw machine (stub) length profile increases rigidity and minimizes deflection
• Right-hand cut with regular spiral flutes for consistent chip evacuation
• Conforms to DIN 6537K specification for dimensional accuracy

Compatibility

Designed as an OEM-style replacement or direct tooling selection for CNC machining centers, drill presses, and screw machines requiring an 8.30 mm solid carbide stub drill. Part of KENNAMETAL Series B966.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before mounting. Use a properly sized collet or chuck matched to the 10.00 mm straight shank diameter to prevent runout. Follow shop safety procedures and applicable machine tool operating standards when setting speeds and feeds for carbide tooling in ferrous materials.