Chicago-latrobe 55476 Reduced Shank Drill Bit Hss

Product Description

The CHICAGO-LATROBE 55476 is a reduced shank twist drill bit machined from high speed steel and designed for general-purpose portable drilling in trade and industrial environments. The bit carries a 1-3/16 inch cutting diameter paired with a 1/2 inch straight-cylindrical shank, allowing it to seat in standard half-inch chucks even though the cutting head is substantially larger. Overall length is 6 inches with a 3-1/8 inch spiral flute length. The 118-degree standard point angle suits a broad range of common materials, and the coated finish helps resist heat buildup and friction during extended use. This bit is a right-hand cut with a regular spiral and two flutes.

The 55476 is built for portable drilling applications encountered in mechanical, construction, and fabrication work. Primary workpiece material is wood, and the bit is rated for secondary use in alloy steel, carbon steel, cast iron, and wood. The reduced shank design is a practical choice when a large-diameter hole is needed but only a half-inch chuck is available, as is common on portable drills and smaller drill presses used in the field or on the shop floor.

Key Features

• Reduced shank design: 1-3/16 inch cutting diameter fits a 1/2 inch chuck
• High speed steel construction for durability across metal, wood, and cast iron
• 118-degree standard point angle for general-purpose entry and chip clearing
• Coated finish reduces friction and extends cutting life
• Right-hand cut, regular spiral, two-flute configuration
• Diameter tolerance held to +0.0000 to -0.0015 inches for consistent hole sizing

Compatibility

Designed as a general-purpose reduced shank drill bit compatible with any portable drill or drill press fitted with a 1/2 inch chuck capacity.

Installation Notes

Installation and use of this bit should be performed by a qualified machinist, electrician, pipefitter, or other trade professional familiar with rotating cutting tools. Secure the workpiece firmly before drilling and confirm the chuck is fully tightened on the shank. Follow applicable OSHA and shop-safety standards for eye protection and drill speed selection appropriate to the workpiece material. Do not exceed the drill press or portable drill rated capacity.