48H380 - Walter 3/8" Square Key Stock - Zinc Plated 12" Length

Precision Key Steel for Industrial Maintenance

The Walter 48H380 Key Steel is a premium-grade maintenance component designed for the precise repair and assembly of power transmission machinery. Manufactured from high-quality cold-drawn steel, this 3/8-inch square stock is engineered to meet the rigorous demands of industrial environments. Unlike standard bar stock, Walter Key Steel is produced with an oversized tolerance. This specific manufacturing choice ensures that when the key is inserted into a standard keyway, it creates a tight interference fit. This eliminates backlash, reduces vibration, and prevents the key from loosening over time, which is critical for the longevity of gears, pulleys, and shafts.

Corrosion is a common enemy in maintenance workshops and operating environments. To combat this, Walter applies a durable zinc plating to every bar. This coating protects the steel from rust and oxidation, ensuring that the material remains in top condition even if stored for extended periods. The 12-inch length is ideal for custom fabrication; technicians can simply cut the exact length required for a specific repair, minimizing waste. Whether you are rebuilding a gearbox, securing a coupling, or performing routine maintenance on shop equipment, this key steel provides the reliability and precision professional mechanics demand.

Key Features

• Interference Fit: Slightly oversized dimensions ensure a secure, rattle-free connection between shaft and hub.


• Corrosion Resistance: Zinc plating prevents rust, extending the shelf life and service life of the component.


• Versatile Utility: Essential for repairing motors, pumps, conveyors, and other rotating machinery.