Kennametal 1913548 Screw Machine Drill Bit 1/2 in Carbide

Product Description

The KENNAMETAL 1913548 is a screw machine length drill bit built for high-performance drilling in ferrous materials. Manufactured from solid carbide and coated with a multilayer TiAlN finish, it delivers extended tool life and heat resistance in demanding production environments. The bit features a 140-degree point angle with web thinning for reduced thrust and improved chip evacuation. At 4.2126 inches overall length with a 2.3622-inch flute length, it fits standard screw machine drilling applications. Licensed machinists, tool-and-die technicians, and CNC operators are the primary installers and users of this bit.

This bit is suited for drilling cast iron and steel in short-hole screw machine drilling setups. The straight cylindrical shank at 0.5512 inches diameter seats securely in standard drill chucks and collet holders. Coolant-through design supports flushing chips from the cutting zone during high-feed operations. The Series B976 designation conforms to DIN 6537K specification, making it compatible with metric and imperial production setups requiring tight diameter tolerances.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• Multilayer TiAlN coating provides heat resistance and extended cutting life
• 140-degree point angle with web thinning reduces entry thrust and improves chip flow
• Coolant-through channels support high-feed wet drilling operations
• Right-hand spiral flute with parallel web configuration for consistent chip evacuation
• Conforms to DIN 6537K specification with diameter tolerance of +0.007 to +0.025 mm

Compatibility

Designed for use in cast iron and steel drilling applications. Primary workpiece materials listed by the manufacturer are cast iron and steel. Fits standard drill chucks and collet holders accepting a 0.5512-inch straight cylindrical shank. Series B976, conforming to DIN 6537K.

Installation Notes

Installation and operation should be performed by qualified machinists or CNC technicians familiar with carbide tooling. Ensure the machine spindle and chuck are fully stopped and locked out before securing or removing the bit. Solid carbide tooling is brittle — avoid side loading, interrupted cuts beyond the tool rating, or dropping the bit on hard surfaces. Verify coolant lines are clear and flowing before beginning through-coolant drilling operations.