Chicago-latrobe 44419 Jobber Drill Bit 19/64 in Left Hand Hss

Product Description

The CHICAGO-LATROBE 44419 is a jobber-length drill bit designed for left-hand cutting in general-purpose drilling applications. Built from high-speed steel with a bright uncoated finish, this bit measures 19/64 inches in diameter (0.2969 inches decimal) and carries a standard 118-degree point angle with a web-thinned, tapered web configuration. The two-flute spiral design with a regular spiral type promotes efficient chip evacuation. At 4-3/8 inches overall length with a 3-1/16-inch flute length, it fits standard drill chucks via its straight-cylindrical shank. Licensed HVAC, plumbing, and electrical tradespeople reach for left-hand bits when backing out broken fasteners or drilling into material where reverse-rotation torque is needed.

This bit is rated for use in cast iron and steel, making it a practical choice for mechanical and industrial service work where broken studs, bolts, and screws are a routine challenge. The 19/64-inch diameter falls within the 0.2500 to 0.3000 inch size range of the Series 150L line, suited to drill presses and hand drills operated in reverse. Tradespeople working on equipment frames, pipe flanges, and electrical enclosures will find this size useful for clearance holes and extraction tasks alike.

Key Features

• Left-hand cutting direction for reverse-rotation drilling and broken fastener extraction
• High-speed steel construction handles cast iron and steel workpieces
• 118-degree standard point angle with web-thinned tapered web for improved penetration
• Bright uncoated finish for easy wear inspection during use
• Straight-cylindrical shank fits standard three-jaw drill chucks
• Diameter tolerance of -0.0010 to 0.0000 inches for consistent hole sizing

Compatibility

Designed as an OEM-style general-purpose jobber-length bit compatible with standard three-jaw drill chucks accepting a 19/64-inch straight-cylindrical shank; rated for drilling cast iron and steel per Series 150L specifications.

Installation Notes

Install and remove this bit with the drill powered off and unplugged or the battery removed. Left-hand bits require the drill set to reverse rotation before use; confirm rotation direction before engaging the workpiece. Secure the workpiece firmly to prevent spin-back when the bit grabs. Wear appropriate eye protection and follow applicable workplace safety codes when drilling metal.