Cleveland C46434 Counterbore 19/32 in 3 Flute Hss

Product Description

The CLEVELAND C46434 is a 3-flute interchangeable pilot counterbore designed for precision counterboring operations in a wide range of ferrous and non-ferrous materials. Built from high-speed steel with a bright, uncoated finish, this tool features a 19/32-inch counterbore diameter and a 1/2-inch straight shank. The overall length is 5-1/8 inches, with a shank length of 3-7/8 inches. Right-hand cutting geometry keeps the tool stable and consistent during operation. Machinists and tool-and-die professionals rely on this style of counterbore for clean, flat-bottom recesses sized to accept socket-head cap screws and similar fasteners.

This counterbore is suited for use in machine shops, maintenance facilities, and production environments where controlled counterbore depth and diameter accuracy are required. Compatible pilot shank diameter is 3/16 inch, allowing the use of interchangeable pilots to maintain concentricity with a drilled or existing hole. Rated for use in alloy tool steel, aluminum, cast iron, low-carbon steel, and medium-carbon steel.

Key Features

• 19/32-inch counterbore diameter with a 3-flute right-hand cutting configuration
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Bright, uncoated finish suitable for general-purpose machining applications
• 1/2-inch straight shank for compatibility with standard drill press and milling machine chucks
• Interchangeable pilot design accepts 3/16-inch pilot shank diameter for concentricity control
• 5-1/8-inch overall length with 3-7/8-inch shank length for reach in typical setups

Compatibility

Accepts interchangeable pilots with a 3/16-inch pilot shank diameter. Rated for cutting alloy tool steel, aluminum, cast iron, low-carbon steel, and medium-carbon steel. Designed as an OEM-style replacement or direct tooling selection for machines accepting a 1/2-inch straight shank counterbore.

Installation Notes

Installation and use of this counterbore should be performed by qualified machinists or tooling technicians. Secure the straight shank firmly in a properly sized chuck before operation, and verify that the selected pilot is seated and locked before beginning the cut. Always reduce spindle speed when transitioning between materials of differing hardness, and use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore quality.