Walter-titex 6618104 Screw Machine Drill Bit 0.256in Carbide

Product Description

The WALTER-TITEX 6618104 is a screw machine length solid carbide drill bit designed for precise, high-performance drilling in demanding trade and production environments. Measuring 0.256 inches (6.50 mm) in diameter with a 140-degree drill point angle, it delivers clean entry geometry suited for tough ferrous materials. The bit runs a right-hand cut with a 3-flute regular spiral configuration, providing efficient chip evacuation and improved hole quality over standard 2-flute designs. Overall length is 3.0 inches with a flute length of 0.768 inches. Part of the DC150-03-A0 series, this bit is built to DIN and ISO standards and carries an m7 diameter tolerance for repeatable, close-tolerance results. Installed by machinists, tool and die technicians, and maintenance mechanics working in production or heavy-trade settings.

This drill bit is rated for use in cast iron and steel workpieces, making it well-suited for structural fabrication, mechanical assembly, and CNC or manual drilling operations where consistent hole diameter and finish are critical. The straight-cylindrical shank seats directly in standard drill chucks and collet holders without additional adapters. The 3xD flute-to-diameter ratio and screw machine length profile keep the tool rigid in short-reach applications. Coolant-through capability is not included, so conventional flood or mist coolant delivery at the periphery is the standard approach for extended run cycles.

Key Features

• Solid carbide construction for superior hardness and wear resistance in ferrous materials
• 3-flute spiral design improves chip evacuation and reduces cycle time versus 2-flute bits
• 140-degree special point angle minimizes walking and reduces thrust on entry
• Screw machine length (3.0 inches overall) provides rigidity in short-reach drilling setups
• m7 diameter tolerance delivers consistent, repeatable hole sizing
• Meets DIN and ISO standards for interchangeability in production environments

Compatibility

Designed as an OEM-style replacement or direct-fit drill bit for use in standard straight-cylindrical shank drill chucks and collet holders; primary workpiece materials listed are cast iron and steel. Part of the WALTER-TITEX DC150-03-A0 series covering the 0.2500 to 0.3000 inch (6.50 to 8.00 mm) diameter range.

Installation Notes

Install and remove this bit with the machine fully powered down and the spindle locked. Seat the straight-cylindrical shank fully into the chuck or collet and confirm runout with a dial indicator before beginning a production run. Follow your machine tool manufacturer guidelines and applicable ANSI or shop safety standards for drilling speed and feed rates based on workpiece material. Do not use the bit beyond its rated maximum drilling depth of 0.768 inches without retracting to clear chips.