Chicago-latrobe 49751 Taper Length Drill Bit 51/64 in

Product Description

The CHICAGO-LATROBE 49751 is a taper length, high speed steel drill bit engineered for general-purpose drilling in metalworking applications. It measures 51/64 inch (0.7969 inches) in diameter with a 118-degree standard point angle and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation at entry. The straight shank allows direct chuck mounting on standard drill presses and hand drills. At 10 inches overall length with a 6.125-inch spiral flute, this bit reaches deeper into workpieces than jobber-length equivalents. The right-hand spiral flute pulls chips clear during cutting. This is a Series 120 general-purpose bit suited to production and maintenance drilling work.

The 49751 is designed for drilling alloy steel, carbon steel, and cast iron in industrial and maintenance environments. Taper length bits are the go-to choice when jobber bits lack the reach needed for deep-hole work on fixtures, structural steel, heavy plate, or machine components. The coated finish extends surface hardness and helps reduce heat buildup during extended drilling cycles. This bit fits standard drill presses, magnetic drills, and hand drills used daily by machinists and maintenance technicians in fabrication shops and industrial facilities.

Key Features

• 51/64 inch (0.7969 inches) diameter with tight tolerance of +0.0000 to -0.0012 inches
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High speed steel construction for durability across alloy steel, carbon steel, and cast iron
• Taper length body at 10 inches OAL with 6.125-inch spiral flute for deep-hole reach
• Right-hand spiral flute for efficient chip evacuation during drilling
• Straight shank at 0.7969 inches diameter for direct chuck compatibility
• Coated finish to extend tool life and manage heat in production drilling

Compatibility

Designed as a general-purpose replacement or production drill bit for applications in alloy steel, carbon steel, and cast iron. Fits standard drill chucks accepting a 0.7969-inch (20.24 mm) straight shank.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with metalworking equipment. Secure the shank fully in the chuck and verify runout before beginning a drilling cycle. Always wear appropriate eye protection and ensure the workpiece is firmly clamped before engaging the spindle. Do not exceed the recommended speed and feed range for the material being drilled, and clear chips regularly to prevent flute packing on deep holes.