Chicago-latrobe 49763 Taper Length Drill Bit 63/64 in Hss

Product Description

The CHICAGO-LATROBE 49763 is a taper length, straight-shank drill bit designed for right-hand cutting in ferrous metals and cast materials. Built from high speed steel with a coated finish, this Series 120 bit measures 63/64 inch (0.9844 inches) in diameter and delivers 11 inches of overall length with a 6.375-inch flute length. The 118-degree standard point with web thinning and a tapered web configuration reduces thrust on entry and keeps the cut stable through medium to thick stock. It is sized and built for use by machinists and maintenance mechanics working on manual or CNC drill presses and milling setups.

This bit is suited for drilling alloy steel, carbon steel, and cast iron in industrial production and maintenance applications. The taper length body provides additional reach beyond a jobber-length bit without requiring an extended-length tool, making it useful for through-holes in thicker workpieces or applications where fixture clearance demands a longer flute. General-purpose grade construction supports a wide range of production drilling tasks where tight tolerances and consistent chip evacuation matter.

Key Features

• 63/64 inch (0.9844 inches) diameter with a diameter tolerance of +0.0000 to -0.0012 inches
• 118-degree standard point angle with web thinning for reduced thrust at entry
• High speed steel construction with coated finish for extended wear life
• Taper length design at 11 inches OAL provides added reach versus jobber-length bits
• Regular spiral, right-hand cut for standard ferrous metal drilling
• Straight shank at 0.9844 inches diameter fits standard drill chucks and collets

Compatibility

Designed for use in alloy steel, carbon steel, and cast iron applications. Compatible with standard drill press chucks, milling machine collet systems, and other toolholders accepting a 63/64-inch straight shank.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tool-and-die professionals familiar with cutting tool setup and speeds-and-feeds selection. Secure the shank fully in the chuck or collet before operation and verify runout before cutting. Always power down and lock out the machine spindle before changing tooling. Use appropriate cutting fluid for the material being drilled to manage heat and extend tool life.