Chicago-latrobe 44418 Jobber Drill Bit 9/32 in Left Hand Hss

Product Description

The CHICAGO-LATROBE 44418 is a jobber-length drill bit designed for left-hand cutting in cast iron and steel. Built from high-speed steel with a bright uncoated finish, it carries a 118-degree standard point angle and features a web-thinned, tapered web configuration for improved chisel edge performance. The spiral flute geometry is regular spiral, and the straight-cylindrical shank measures 9/32 inch in diameter, matching the drill diameter exactly. Overall length is 4.25 inches with a flute length of 2.9375 inches. This bit is part of the Series 150L lineup and is intended for general-purpose drilling applications where left-hand rotation is required.

Left-hand drill bits are a standard tool for maintenance technicians, machinists, and trade professionals who need to extract broken fasteners or drill reverse-rotation pilot holes. The 44418 is sized at 9/32 inch (0.2812 inch decimal), placing it in the 0.2500 to 0.3000 inch diameter range. It is well suited for production and job-site work in ferrous materials including cast iron and steel. The bright finish keeps costs down on general-purpose work where a coated bit is not required by the application.

Key Features

• Left-hand cutting direction for broken fastener extraction and reverse-rotation drilling
• High-speed steel construction for durability in cast iron and steel workpieces
• 118-degree standard point angle with web-thinned tapered web for reduced thrust
• Bright uncoated finish suitable for general-purpose applications
• Straight-cylindrical shank compatible with standard 3-jaw drill chucks
• Regular spiral flute design promotes chip evacuation during drilling

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard 3-jaw chucks and compatible with drill presses, hand drills, and reversible power drills that support left-hand rotation. Primary workpiece materials are cast iron and steel.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or trade professionals familiar with left-hand drill bit operation. Secure the workpiece firmly before drilling and verify the drill or press is set to reverse rotation before engaging the bit. Wear appropriate eye protection and follow applicable shop safety standards when drilling ferrous materials. Do not exceed the recommended speed range for the bit diameter and workpiece material.