Woodruff DH501212 Keyseat Cutter

The Woodruff DH501212 Keyseat Cutter is a precision industrial tool designed for cutting accurate keyways and keyseats in shafts and rotating components. Manufactured by Woodruff (Part No. 173903, Model DH501212), this keyseat cutting tool is intended for use with milling machines and machining centers to perform precise keyseat and keyway cutting. Constructed from industrial-grade hardened tool steel, it supports continuous-duty machining in machine shops, fabrication facilities, and maintenance departments. Common applications include shaft preparation, motor repair, gearbox assembly, and other drivetrain component manufacturing, with common replacements such as Niagara Keyseat Cutter, Harvey Tool Woodruff Cutter, and Cleveland Keyway Cutter.