Chicago-latrobe 68813 Taper Length Drill Bit 13/64 Hss

Product Description

The CHICAGO-LATROBE 68813 is a heavy-duty taper length drill bit designed for precision hole-making in metalworking and fabrication applications. It measures 0.2031 inches (13/64 inch) in diameter with a 6-inch overall length, giving it extended reach compared to a jobber-length bit. The 135-degree split point is web-thinned and self-centering, reducing the need for a center punch and lowering thrust requirements on entry. Constructed from high speed steel (HSS) with a bright/uncoated finish, the 68813 is built for machinists, maintenance technicians, and fabricators working with ferrous and non-ferrous stock.

This bit is suited for drilling in alloy steel, carbon steel, aluminum, and other non-ferrous metals. The taper length configuration provides added rigidity and reach for applications where a standard jobber bit falls short, such as deep-hole work, jig drilling, and production machining environments. The parabolic flute geometry improves chip evacuation during deep passes, reducing heat buildup and chip packing. It is a common choice for manual drill press and CNC drilling operations where consistent hole quality is required.

Key Features

• 135-degree split point with web thinning for self-centering entry and reduced thrust
• Parabolic flute design promotes efficient chip evacuation in deep-hole drilling
• High speed steel construction rated for heavy-duty use in steel, aluminum, and non-ferrous metals
• Tapered web configuration adds strength along the flute length
• Right-hand cut with tanged shank for positive engagement in compatible chucks
• Bright/uncoated finish — no added coating to affect hole tolerance or surface interaction

Compatibility

The CHICAGO-LATROBE 68813 is a Series 120DH taper length drill bit compatible with standard drill chucks accepting a 0.2031-inch tanged shank. Rated for use in alloy steel, carbon steel, aluminum, and non-ferrous metals.

Installation Notes

Installation and use should be performed by a qualified machinist or skilled tradesperson familiar with metal drilling operations. Secure the workpiece firmly before drilling and ensure the chuck is properly tightened on the tanged shank before operation. Always power down the drill press or disconnect the machine from its power source before changing bits. Follow applicable shop safety standards and use appropriate cutting fluid for the material being drilled to extend tool life and maintain hole quality.