Chicago-latrobe 47504 5/16 Inch Hss Jobber Drill Bit

Product Description

The CHICAGO-LATROBE 47504 is a jobber-length drill bit designed for general-purpose drilling in metal and cast iron applications. Built from high speed steel with an oxide coating, the bit measures 5/16 inch in diameter with a 4.5-inch overall length and a 3.1875-inch flute length. The 118-degree standard point angle suits a wide range of common materials. A tapered web with web thinning reduces thrust and helps the bit start cleanly without walking. The tanged shank provides positive drive engagement in compatible chucks. This bit is sized for use by machinists, millwrights, HVAC technicians, plumbers, and electricians working with ferrous metals and general structural materials.

The 47504 is suited for production and maintenance drilling in residential and commercial settings. Typical applications include drilling pilot and clearance holes in steel plate, cast iron components, structural steel, and similar workpieces. The 2-flute spiral configuration with regular helix handles chip evacuation reliably in through-hole and blind-hole drilling. The 5/16-inch shank diameter matches the bit diameter, fitting standard 3/8-inch or 1/2-inch keyed and keyless drill chucks commonly used in corded drills, drill presses, and magnetic base drills.

Key Features

• High speed steel construction for durability in ferrous and general-purpose drilling
• Oxide finish improves lubricity and provides basic corrosion resistance
• 118-degree standard point angle for general-purpose entry into steel and cast iron
• Web-thinned tapered web reduces cutting thrust and improves hole-start accuracy
• Right-hand 2-flute spiral configuration promotes efficient chip removal
• Tanged shank provides positive torque transfer in standard drill chucks

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard 3/8-inch and 1/2-inch drill chucks. Primary workpiece materials are cast iron and steel per Series 250AN specifications.

Installation Notes

Install and remove drill bits only with the drill or drill press fully powered off and disconnected from its power source. Secure the workpiece before drilling to prevent rotation or movement during operation. Use appropriate cutting fluid when drilling steel or cast iron to extend bit life and improve hole quality. Inspect the bit for chipping or wear before each use and replace if the cutting edges are damaged.