Walter-titex 6618129 Carbide Screw Machine Drill Bit 0.335 in

Product Description

The WALTER-TITEX 6618129 is a solid carbide screw machine length drill bit designed for precision drilling in demanding industrial applications. Sized at 0.335 inches (8.50 mm) in diameter with a 140-degree drill point angle, this bit delivers clean, accurate entry in hard and abrasive workpiece materials. The coated finish extends tool life by reducing friction and heat buildup at the cutting edge. Right-hand spiral flutes - three in total - evacuate chips efficiently during through and blind-hole operations. Licensed tradespeople and machining professionals in production environments rely on this style of bit for consistent, repeatable results across high-cycle drilling runs.

This drill bit is suited for drilling cast iron and steel in screw machine, CNC, and general-purpose metalworking applications. Its screw machine (stub) length geometry provides added rigidity compared to jobber-length bits, making it well-suited for short-setup drilling where deflection control is critical. The straight cylindrical shank seats securely in standard drill chucks and collet holders. With a flute-by-diameter ratio of 3xD and a maximum drilling depth of 1.005 inches, it is optimized for shallow to medium-depth holes in production environments.

Key Features

• Solid carbide construction for high hardness and wear resistance in ferrous materials
• 140-degree drill point angle reduces thrust and improves centering on entry
• Three spiral flutes with regular helix for efficient chip evacuation
• Coated finish extends cutting life in abrasive cast iron and steel
• Screw machine length body provides rigidity and reduces deflection
• Complies with DIN and ISO standards; drill bit diameter tolerance m7

Compatibility

Designed for use in cast iron and steel workpieces as part of the WALTER-TITEX DC150-03-A0 series, covering drill bit diameters in the 0.3000 to 0.3500 inch (8.00 to 9.50 mm) range. Fits standard drill chucks and collet holders accepting a straight cylindrical shank.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tool and die professionals familiar with metalworking equipment. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit from the chuck or collet. Verify that the shank is fully seated and the chuck is properly tightened before beginning any drilling operation. Follow machine manufacturer guidelines for feed rate and spindle speed appropriate to the workpiece material and bit diameter.