Accupro 4500369 5/8 Inch Solid Carbide Drill Bit 140 Deg

Product Description

The ACCUPRO 4500369 is a screw machine length drill bit designed for high-performance drilling in demanding materials, particularly stainless steels. Manufactured from solid carbide and coated with TiAlN for heat and wear resistance, this bit features a 5/8 inch diameter, a 140-degree split point angle, and an overall length of 5.709 inches. The right-hand spiral flute geometry and R-thinned web reduce cutting forces and improve chip evacuation. Coolant-through capability supports extended tool life in production environments. Licensed trades and machining professionals use this bit where standard HSS tooling fails to hold up.

This drill bit is suited for precision drilling operations in stainless steels and other hard-to-machine materials. The screw machine length format provides added rigidity compared to jobber-length bits, making it a reliable choice for CNC machining centers, manual lathes, and drill press operations where hole position accuracy and surface finish are critical. The 3xD flute-to-diameter ratio supports effective chip clearing in short, deep holes.

Key Features

• Solid carbide construction for rigidity and heat resistance in tough materials
• TiAlN coating extends tool life and reduces thermal wear at the cutting edge
• 140-degree special point angle reduces thrust and minimizes workpiece deformation on entry
• R-thinned web reduces cutting resistance and improves chip flow
• Coolant-through design supports continuous operation in high-production settings
• Straight-cylindrical shank compatible with standard drill chucks and collets

Compatibility

Designed as a high-performance replacement for screw machine length drill bits used in stainless steel drilling applications. Primary workpiece material designation is stainless steels per ISO specification.

Installation Notes

Installation and use of solid carbide drill bits should be performed by qualified machinists or trade professionals familiar with cutting tool setup and safe machine operation. Ensure the machine spindle and chuck are fully stopped and locked out before mounting or removing the bit. Use appropriate coolant flow rates when engaging the coolant-through feature to prevent thermal shock to the carbide. Avoid side loading or interrupted cuts that can cause carbide to chip or fracture.