Chicago-latrobe 44139 Jobber Length Drill Bit Wire 69

Product Description

The CHICAGO-LATROBE 44139 is a wire gauge size 69 jobber length drill bit designed for general-purpose drilling in ferrous materials. Built from high speed steel with an oxide coating, it measures 0.0292 inches in diameter and 1.375 inches overall length. The 118-degree standard point angle and regular spiral flute geometry make it well-suited for production and maintenance drilling where consistent hole quality is required. The straight-cylindrical shank seats directly into standard drill chucks without adapters. This is a Series 150 bit conforming to DIN 338.

This drill bit is intended for use on cast iron and steel workpieces in light to medium-duty applications. The 0.5-inch flute length accommodates shallow-depth holes typical of wire gauge work, and the web-thinned, tapered web configuration reduces entry force and walking on hard surfaces. Machinists, maintenance technicians, and toolroom professionals will find this bit appropriate for precision small-diameter work on manual drill presses, CNC equipment, and handheld corded drills.

Key Features

• Wire gauge size 69 - 0.0292-inch decimal diameter with a tolerance of -0.0005 to 0.0000 inches
• 118-degree standard point angle for general-purpose drilling in cast iron and steel
• High speed steel construction with oxide coating for surface protection
• Web-thinned tapered web reduces thrust load and improves chip clearance
• Regular right-hand spiral flute with straight-cylindrical shank for standard chuck compatibility
• Conforms to DIN 338 standard; Series 150 designation

Compatibility

Designed as a general-purpose OEM-style jobber length drill bit suitable for standard three-jaw chucks and collet systems accepting a 0.0292-inch straight-cylindrical shank.

Installation Notes

Installation and use should be performed by machinists or qualified maintenance technicians familiar with small-diameter drill bit handling. Secure the workpiece firmly before drilling to prevent bit deflection or breakage at this diameter. Use appropriate cutting fluid or lubrication when drilling steel to extend tool life. Always operate at manufacturer-recommended spindle speeds for the workpiece material and bit diameter.