Walter-titex 5058781 Jobber Drill Bit 5.5mm Hss Oxide

Product Description

The WALTER-TITEX 5058781 is a jobber-length twist drill bit designed for production and maintenance drilling in metalworking applications. Built from high speed steel with an oxide coating, it measures 5.5 mm (0.2165 inches) in diameter and carries an overall length of 93 mm (3-21/32 inches). The 118-degree standard point angle and web-thinned, tapered web geometry reduce entry thrust and improve centering on flat or curved workpiece surfaces. The spiral flute with a regular helix provides reliable chip evacuation during through-hole and blind-hole operations. Licensed HVAC technicians, pipefitters, and maintenance machinists working with ferrous stock will find this bit a dependable general-purpose option for steel and cast iron.

The 5058781 is rated for primary workpiece materials including cast iron and steel, and is suited for blind hole drilling and stack drilling operations. The straight-cylindrical shank (0.2165 inches diameter, 1.417 inches shank length) seats directly in standard drill chucks and collet holders on benchtop drill presses, magnetic drills, and handheld power tools. With a flute length of 57 mm (2-1/4 inches) and a maximum drilling depth of 48 mm (1.89 inches), it handles the full depth range typical of jobber-length work. The flute-to-diameter ratio is 8xD. This bit is produced to ANSI and ISO standards and carries BS and DIN specification designations, making it suitable for both domestic and international specification work.

Key Features

• 5.5 mm (0.2165 inch) diameter, h8 tolerance for consistent fit in close-tolerance applications
• High speed steel construction with oxide finish for reduced friction and light corrosion resistance
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust at entry
• 2-flute regular spiral design promotes chip clearance in cast iron and steel
• Straight-cylindrical shank compatible with standard drill chucks and collet systems
• Rated for blind hole and stack drilling; 8xD flute-to-diameter ratio
• Conforms to ANSI, ISO, BS, and DIN standards

Compatibility

Designed for use in cast iron and steel workpieces. Fits standard 3-jaw drill chucks and collet holders accepting a 0.2165-inch straight-cylindrical shank. Part of the WALTER-TITEX Series A1211 general-purpose high speed steel drill line.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tradespeople following applicable shop safety protocols. Ensure the workpiece is securely fixtured and the drill chuck is fully tightened before operation. Do not exceed the rated maximum drilling depth of 1.89 inches in a single pass without retracting to clear chips. Coolant-through is not supported on this bit; use external cutting fluid when drilling steel to manage heat buildup.