Walter-titex 6618077 Screw Machine Drill Bit 4.50mm

Product Description

The WALTER-TITEX 6618077 is a solid carbide screw machine length drill bit engineered for precision drilling in steel and cast iron. Built to Series DC150-03-A0 standards, it features a 140-degree point angle optimized for reduced thrust and accurate entry without a center punch. The TiNAl coating provides thermal and wear resistance for demanding production environments. At 4.50 mm (0.1770 inches) in diameter, this right-hand cutting bit delivers a 3xD flute-to-diameter ratio and is suited for high-volume machining operations where consistency and tool life are critical. Weighing 0.049 pounds, it is a compact, high-performance cutting tool for shop or field use.

This drill bit is designed for screw machine length applications in ferrous materials, primarily steel and cast iron, covering residential and commercial machining, maintenance, and fabrication environments. The straight cylindrical shank and standard geometry make it compatible with conventional drill chucks and CNC tool holders. Its universal tool performance rating and compliance with DIN and ISO standards make it a reliable choice for production drilling, repair shops, and precision fabrication setups requiring consistent hole quality in the 3.50 mm to 5.00 mm diameter range.

Key Features

• Solid carbide construction for superior rigidity and wear resistance in hard materials
• TiNAl coating extends tool life under high-heat, high-speed cutting conditions
• 140-degree point angle reduces entry thrust and improves hole accuracy
• Right-hand, regular spiral flute design promotes efficient chip evacuation
• Straight cylindrical shank compatible with standard drill chucks and CNC holders
• Compliant with DIN and ISO standards for consistent dimensional quality

Compatibility

Designed for drilling in steel and cast iron workpieces; fits within the 3.50 mm to 5.00 mm drill bit size range and is compatible with standard straight-shank drill chucks and CNC machining centers accepting a 0.2360-inch shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists or tool and die technicians familiar with carbide tooling. Ensure the machine spindle and chuck are fully powered down and locked out before inserting or removing the bit. Carbide tooling is brittle and susceptible to chipping under side-load or impact; avoid using this bit for interrupted cuts or in applications beyond its rated workpiece materials. Verify chuck runout before use to maintain hole tolerance and extend tool life.