Chicago-latrobe 50527 Extra Length Drill Bit 3/8 in Hss

Product Description

The CHICAGO-LATROBE 50527 is a Series 120X extra length drill bit designed for long-reach drilling applications in metal fabrication, maintenance, and industrial settings. Sized at 3/8 inch (0.375 inches) in diameter with an overall length of 8 inches and a flute length of 5.5 inches, it delivers extended reach where standard-length bits cannot access. Constructed from high speed steel with an oxide finish, the 50527 resists heat buildup during continuous cutting. The 118-degree notched point and web-thinned, tapered web design reduce entry force and improve chip evacuation. This bit is installed and used by machinists, maintenance technicians, pipefitters, and ironworkers requiring deep or offset hole placement.

The 50527 is suited for drilling cast iron and steel in residential and commercial maintenance, structural fabrication, and mechanical service environments. Its extra length makes it particularly useful when drilling through thick stock, deep cavities, or locations where standard-length bits lack sufficient reach. The right-hand spiral flute and straight-cylindrical shank allow use in standard drill chucks without adapters, supporting quick setup in variable-speed drill presses, hand drills, or magnetic drills.

Key Features

• 3/8 inch diameter with 8 inch overall length for extended reach drilling
• High speed steel construction withstands heat generated during ferrous metal drilling
• Oxide finish improves lubricity and surface hardness
• 118-degree notched point reduces walking and lowers entry force
• Web-thinned tapered web promotes efficient chip evacuation in deep holes
• 2-flute right-hand spiral design compatible with standard drill chucks via straight-cylindrical shank

Compatibility

Designed as a general-purpose extra length drill bit for use in cast iron and steel. Fits any standard drill chuck accepting a 3/8 inch straight-cylindrical shank.

Installation Notes

This bit is used by machinists and mechanical tradespeople in drill presses, hand drills, or magnetic base drills. Secure the shank fully in the chuck before operation and verify chuck tightness to prevent slippage. Use appropriate cutting fluid when drilling ferrous metals to extend bit life and reduce heat buildup. Inspect the cutting edges before each use and do not force the bit through material at excessive feed rates, as this can cause premature dulling or bit breakage.