Chicago-latrobe 44372 Letter B Hss Jobber Drill Bit

Product Description

The CHICAGO-LATROBE 44372 is a jobber-length drill bit in Letter B size, measuring 0.2380 inches in diameter, designed for general-purpose drilling in non-ferrous metals and similar materials. Built from high-speed steel (HSS) with a bright uncoated finish, it features a standard 118-degree point angle and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. The two-flute regular spiral design and right-hand cutting direction are standard for most production and maintenance drilling applications. The straight-cylindrical shank seats securely in keyed or keyless chucks. Overall length is 4 inches with a flute length of 2.75 inches, offering the reach typical of jobber-series bits. This bit conforms to DIN 338 standards.

The 44372 is suited for drilling non-ferrous metals including aluminum, brass, copper, and similar alloys in both shop and field environments. The general-purpose grade and jobber length make it a practical choice for HVAC technicians, electricians, plumbers, and maintenance mechanics who need a reliable letter-size drill for panel work, bracket fabrication, and general sheet metal or tubing applications. The 1.25-inch shank length provides solid grip in standard three-jaw drill chucks.

Key Features

• Letter B size, 0.2380 inches diameter, with a diameter tolerance of -0.0007 to 0.0000 inches
• 118-degree standard point angle with web-thinned, tapered web for reduced drilling thrust
• High-speed steel construction with bright uncoated finish for general-purpose use
• Regular spiral, two-flute design promotes efficient chip removal
• Right-hand cut, straight-cylindrical shank fits standard drill chucks
• Conforms to DIN 338 jobber-length standard

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard three-jaw keyed and keyless drill chucks accepting a 0.2380-inch straight-cylindrical shank. Primary workpiece material is non-ferrous metal.

Installation Notes

This bit is installed and operated by any trade professional using a corded or cordless drill or drill press. Secure the shank fully in the chuck and verify tightness before drilling. Use appropriate cutting fluid or lubricant when drilling non-ferrous metals to extend bit life and improve cut quality. Inspect the cutting edges for wear regularly and replace when the point shows signs of dulling to avoid oversized holes or workpiece damage.