Chicago-latrobe 44074 No. 4 Wire Jobber Drill Bit Hss

Product Description

The CHICAGO-LATROBE 44074 is a jobber-length drill bit in No. 4 wire gauge size, measuring 0.2090 inches in diameter. Built from high speed steel with an oxide coating, it is designed for general-purpose drilling in cast iron and steel. The 118-degree standard point angle and web-thinned tip reduce entry force and improve centering on typical metal workpieces. At 3.75 inches overall length with a 2.5-inch spiral flute, it fits standard drill chucks in benchtop drill presses and handheld power drills. This bit belongs to the Series 150 line and conforms to DIN 338 standards. It is well-suited for maintenance technicians, fabricators, and trade professionals who drill ferrous metals regularly.

The 44074 is a right-hand cut, straight-cylindrical shank bit with a regular spiral and tapered web configuration. Its 0.2090-inch shank diameter matches the bit diameter, allowing direct chuck engagement without adapters. Primary workpiece materials are cast iron and steel, making it a practical choice for mechanical rooms, equipment pads, structural steel work, and general shop drilling. The bit ships individually and is ordered in single-unit quantities, suited for targeted replacements or stocking by size.

Key Features

• No. 4 wire size at 0.2090 inches diameter with a tolerance of -0.0007 to 0.0000 inches for consistent hole sizing
• High speed steel construction with oxide coating for heat resistance and surface protection on ferrous metals
• 118-degree standard point angle with web-thinned tip for reduced thrust and improved self-centering
• Regular spiral, 2-flute design promotes chip evacuation during through-hole drilling in steel and cast iron
• Straight-cylindrical shank at 1.25 inches in length fits standard 3-jaw drill chucks without adapters
• Conforms to DIN 338 dimensional standards for interchangeability across Series 150 tooling

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard drill chucks accepting a 0.2090-inch straight shank. Primary workpiece materials listed by the manufacturer are cast iron and steel.

Installation Notes

Secure the shank fully in the drill chuck and verify runout before beginning. Use appropriate cutting fluid or lubricant when drilling steel to extend bit life and maintain hole tolerance. Always wear eye protection and secure the workpiece before drilling. Follow applicable shop safety practices and tool manufacturer guidelines for speed and feed selection.