Chicago-latrobe 50520 Extra Length Drill Bit 0.3594in Hss

Product Description

The CHICAGO-LATROBE 50520 is a Series 120X extra length high speed steel drill bit designed for long reach drilling applications in metal fabrication, maintenance, and industrial environments. Built from high speed steel with an oxide finish, this bit features a 0.3594-inch diameter, a 118-degree notched drill point, and a web-thinned, tapered web configuration for improved chip evacuation and reduced thrust during entry. The straight-cylindrical shank measures 0.3594 inches in diameter and accepts standard drill chucks without adapters. This bit is suited for machinists, millwrights, and maintenance technicians who need extended reach where standard-length bits cannot access the work zone.

The 50520 is rated for general purpose drilling in cast iron and steel. With an 8-inch overall length and a 5.5-inch flute length, it provides the clearance needed for deep-hole work, structural drilling, and confined-space access. The right-hand spiral flute geometry with regular spiral type promotes consistent chip removal during through-hole and deep drilling operations. This bit is a fit for job shops, fabrication facilities, and field maintenance crews working on ferrous materials.

Key Features

• 0.3594-inch diameter with tolerance of +0.0000 to -0.0010 inches for accurate hole sizing
• 8-inch overall length and 5.5-inch flute length for extended reach applications
• 118-degree notched point with web thinning reduces thrust and improves centering
• High speed steel construction with oxide finish for general purpose ferrous drilling
• Straight-cylindrical shank fits standard drill chucks without special tooling
• Right-hand cutting direction with regular spiral flute for reliable chip evacuation

Compatibility

Designed as a general purpose extra length drill bit for use in cast iron and steel workpieces. Compatible with standard drill chucks accepting a 0.3594-inch straight-cylindrical shank.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician using a properly rated drill press, magnetic drill, or hand drill with an appropriate chuck capacity. Secure the workpiece firmly before drilling and use cutting fluid when drilling steel to extend tool life and improve hole quality. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed. California Proposition 65 warnings apply to this product.