Walter-titex 5058442 Jobber Drill Bit 0.8mm Hss Oxide

Product Description

The WALTER-TITEX 5058442 is a jobber-length twist drill bit designed for precision drilling in ferrous materials. Built from high speed steel with an oxide finish, this bit measures 0.8 mm (0.0315 inches) in diameter and has an overall length of 30.00 mm (1-3/16 inches). The 118-degree standard point geometry and web-thinned, tapered web configuration reduce entry force and improve centering on contact. The two-flute spiral design promotes efficient chip evacuation. This bit is sized for tight-tolerance work, carrying a diameter tolerance of h8, and is suited for applications where controlled depth and clean hole entry are required.

The 5058442 is rated for use in cast iron and steel workpieces, making it appropriate for general-purpose machining, maintenance, and fabrication environments. Its straight-cylindrical shank seats directly in standard drill chucks without adapters. Typical applications include blind hole drilling and stack drilling operations. The flute-to-diameter ratio of 8xD and a maximum drilling depth of 8.70 mm (0.3430 inches) define its practical operating range. This bit is suited for use by machinists, maintenance technicians, and trade professionals working with steel and cast iron components in industrial or field settings.

Key Features

• 0.8 mm (0.0315 inch) diameter with h8 tolerance for close-fit hole work
• High speed steel construction with oxide coating for wear resistance
• 118-degree standard point with web thinning for reduced thrust and improved centering
• Two-flute spiral design for effective chip clearing in steel and cast iron
• Straight-cylindrical shank fits standard drill chucks without adapters
• Rated for blind hole and stack drilling applications per Series A1211

Compatibility

Designed for drilling cast iron and steel workpieces. Suitable for use in standard drill chucks accepting a 0.0315-inch straight shank. Conforms to ANSI, ISO, BS, and DIN specifications for jobber-length drill bits in the 0.0000 to 0.0500 inch size range.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotary cutting tools. Secure the shank fully in the drill chuck and verify runout before use. Power down and de-energize any machine tool before changing bits. Do not exceed the maximum drilling depth of 8.70 mm (0.3430 inches) to avoid bit deflection or breakage, especially at this small diameter.