Kennametal 2649377 Screw Machine Drill Bit 27/64 in

Product Description

The KENNAMETAL 2649377 is a screw machine length solid carbide drill bit engineered for high-performance drilling in demanding industrial and trade applications. It carries a multilayer TiAlN coating over a solid carbide substrate, delivering exceptional heat resistance and wear life at elevated cutting speeds. The 140-degree split point geometry with web thinning allows aggressive entry and reduces thrust force, making it well suited for production drilling and tight-tolerance work. With an overall length of 4.0157 inches and a 27/64-inch (0.4219 inch) cutting diameter, this bit is sized for stub-length rigidity in applications where deflection control matters.

This drill bit is designed for right-hand cutting in cast iron and steel workpieces, which are among the most common materials encountered in machining, fabrication, and mechanical service environments. The straight cylindrical shank at 0.4724 inches (12.00 mm) in diameter fits standard drill chucks and collet holders. Coolant-through capability supports high-speed production runs where chip evacuation and thermal management are priorities. It conforms to DIN 6537K specification, making it a recognized standard for screw machine length carbide drills used across manufacturing and maintenance trades.

Key Features

• Solid carbide construction with multilayer TiAlN coating for extended tool life in ferrous materials
• 140-degree standard point with web thinning reduces entry thrust and improves hole quality
• Coolant-through design aids chip evacuation and heat control during production drilling
• Straight cylindrical shank at 0.4724 inches (12.00 mm) fits standard toolholders
• Regular spiral, 2-flute configuration with parallel web for consistent chip flow
• Conforms to DIN 6537K specification for screw machine length carbide drills

Compatibility

Designed as a DIN 6537K-compliant screw machine length drill bit for use in cast iron and steel workpieces. Compatible with standard drill chucks, collet holders, and coolant-through spindles accepting a 0.4724-inch (12.00 mm) straight cylindrical shank.

Installation Notes

Installation and operation should be performed by qualified machinists or tooling technicians familiar with carbide cutting tool handling. Power down and lock out the machine spindle before installing or removing the bit. Confirm the toolholder is clean and the shank seats fully before securing the chuck or collet to the manufacturer torque specification. Carbide is brittle — avoid lateral loading, interrupted cuts beyond the tool rating, and dropping the bit on hard surfaces, as impact can cause chipping or fracture.