Woodruff Keys 25pk 3/16 x 1-3/8

Pioneer Woodruff Keys 25 Pack (3/16 x 1-3/8 inch) are precision-engineered fasteners designed for securing pulleys, gears, and rotating components to motor shafts in various automotive applications. These keys are essential for preventing slippage and maintaining timing synchronization in engine rebuilds and performance modifications.

With a half-moon profile, the 3/16 x 1-3/8 dimensions allow these keys to seat into corresponding keyways milled into both the shaft and hub. This design helps distribute torque evenly across the contact surface, minimizing rotational play. Pioneer's construction is designed to meet standard tolerances, making them suitable for various applications.

These Woodruff keys are ideal for mechanics and performance builders working on multi-component rebuilds or maintaining a shop's repair stock. While they are compatible with many engine platforms, it is important to verify keyway dimensions to ensure proper fitment. The 25-pack quantity provides a convenient supply for any serious mechanic.