Chicago-latrobe 50613 Extra Length Drill Bit 0.6094 in Hss

Product Description

The CHICAGO-LATROBE 50613 is a high speed steel extra length drill bit designed for long reach drilling applications in industrial and trade environments. Built to Series 120X specifications, this bit features a 0.6094-inch diameter, a 118-degree notched point, and a web-thinned, tapered web configuration that reduces thrust and improves chip flow. The oxide finish provides moderate lubricity and corrosion resistance during use. With a 12-inch overall length and 9-inch flute length, it extends cutting reach well beyond what standard-length bits allow. Machinists, pipefitters, and maintenance professionals typically reach for this bit when standard lengths cannot access the work zone.

This bit is suited for right-hand cutting in cast iron and steel. Its spiral flute geometry and straight-cylindrical shank make it compatible with standard drill chucks and CNC spindles. The long reach design makes it appropriate for deep-hole work in structural steel, heavy fabrication, maintenance drilling through framing and plate, and similar applications where access depth is the limiting factor. The 2-flute configuration handles chip evacuation efficiently in these materials.

Key Features

• 0.6094-inch diameter with a tolerance of +0.0000 to -0.0012 inches for consistent hole sizing
• 118-degree notched point reduces walking and improves positioning on ferrous materials
• Web-thinned, tapered web lowers cutting resistance and cutting force requirements
• 9-inch flute length and 12-inch overall length for extended reach applications
• High speed steel construction handles interrupted cuts and moderate heat buildup
• Oxide finish provides light lubricity and surface protection during dry or semi-dry cutting

Compatibility

Designed for use in cast iron and steel workpieces. Straight-cylindrical shank fits standard keyed and keyless drill chucks accepting a 0.6094-inch shank diameter.

Installation Notes

Install and remove this bit only with the drill or machine powered off and the spindle at a full stop. Secure the straight-cylindrical shank firmly in the chuck before beginning any cut to prevent slippage under torque. Long-reach bits are more susceptible to deflection at speed than standard-length bits; use the lowest practical feed rate when entering the workpiece. Follow applicable shop safety standards and wear appropriate eye and hand protection during operation.