Walter-titex 5057122 Screw Machine Drill Bit 0.25in

Product Description

The WALTER-TITEX 5057122 is a screw machine length drill bit designed for high-performance drilling in demanding materials. Built from cobalt and vanadium high speed steel, it delivers the heat and wear resistance required when working through stainless steel, cast iron, hard materials, and non-ferrous metals. The 0.25 inch (1/4 inch, Letter E) diameter bit features a 130-degree split point and a parabolic flute geometry that promotes efficient chip evacuation and reduces walking at entry. With an overall length of 2-3/4 inches and a flute length of 1-7/32 inches, this bit fits standard screw machine length applications where a compact, rigid setup is needed. Manufactured to DIN and ISO standards, it is suited for production and maintenance environments.

This drill bit is used in metalworking applications across industrial maintenance, fabrication shops, and mechanical contracting work. The screw machine length format offers increased rigidity compared to jobber-length bits, making it a practical choice for drilling in drill presses, CNC machines, and turret lathes. Primary workpiece materials include stainless steel, steel, cast iron, hard materials, and non-ferrous metals. The Series A1148 designation places it in a universal-performance tool family engineered for a wide cross-section of production drilling tasks.

Key Features

• Cobalt and vanadium high speed steel construction for heat resistance in tough materials
• 130-degree split point reduces thrust and eliminates the need for a center punch on most metals
• Parabolic flute geometry promotes fast chip evacuation and reduces chip packing
• Web-thinned, tapered web configuration improves cutting efficiency and reduces torque
• Bright/uncoated finish suitable for use with cutting fluids and oils
• Right-hand cut, straight-cylindrical shank fits standard drill chucks and collets
• Meets DIN, ISO, and BS specification designations for dimensional and performance consistency

Compatibility

Designed for use in standard straight-shank drill chucks and collets on drill presses, CNC machining centers, and turret lathes. Compatible with primary workpiece materials including stainless steel, steel, cast iron, hard materials, and non-ferrous metals. Fits drill bit size range 0.2500 to 0.3000 decimal inch within the A1148 series.

Installation Notes

Installation and use of this drill bit should be performed by a qualified machinist or metalworking professional familiar with proper tool holding and speeds-and-feeds practices. Secure the shank fully in the chuck or collet before operation and verify runout before drilling production parts. Always apply an appropriate cutting fluid when drilling stainless steel or hard materials to manage heat buildup. Replace the bit when cutting edges show signs of dulling to avoid work hardening the workpiece material.