Chicago-latrobe 49748 3/4 Inch Taper Length Drill Bit Hss

Product Description

The CHICAGO-LATROBE 49748 is a taper length drill bit designed for drilling into alloy steel, carbon steel, and cast iron. Built from high speed steel with a coated finish, it features a 118-degree standard point angle and a web-thinned, tapered web configuration that reduces cutting resistance at the tip. The straight shank measures 3/4 inch in diameter, and the overall length is 9.75 inches. The right-hand spiral flute with a flute length of 5.875 inches provides efficient chip evacuation during general purpose drilling operations. This bit is part of the CHICAGO-LATROBE Series 120 line and is suited for use in drill presses, lathes, and hand-held drilling equipment by machinists, pipefitters, and industrial maintenance technicians.

This taper length drill bit is intended for general purpose metal drilling in industrial and commercial maintenance settings. The 3/4 inch diameter makes it a common choice for bolt clearance holes, conduit knockouts in heavy enclosures, and structural fabrication work where a standard jobber-length bit lacks sufficient reach. Material applications include alloy steel, carbon steel, and cast iron. The taper length body provides extra reach compared to a jobber-length bit without sacrificing rigidity. Diameter tolerance is held to +0.0000 to -0.0012 inches, making it suitable for applications requiring consistent hole sizing.

Key Features

• High speed steel construction for durability in steel and cast iron drilling
• 118-degree standard point angle for general purpose metal drilling
• Web-thinned tapered web reduces thrust and improves chip flow at the tip
• Right-hand spiral flute, 5.875 inches long, for efficient chip evacuation
• Straight 3/4 inch shank compatible with standard drill chucks and holders
• Diameter tolerance of +0.0000 to -0.0012 inches for consistent hole sizing

Compatibility

Designed as a general purpose taper length drill bit for use in standard drill presses, milling machines, and hand drilling equipment that accept a 3/4 inch straight shank. Suitable for drilling alloy steel, carbon steel, and cast iron.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with metal drilling practices. Secure the straight shank fully in a properly rated chuck before operation and verify the chuck rating supports the 3/4 inch shank diameter. Power down and de-energize all equipment before changing tooling. Use appropriate cutting fluid or coolant for the material being drilled to extend tool life, noting that this bit does not have a coolant-through design.