The Machine Key M5 x 5 x 45 Form B is an undersized key made from high-quality carbon steel, designed for precise fit and reliable performance in mechanical assemblies. Measuring 5 mm in width, 5 mm in height, and 45 mm in length, this key is ideal for securing rotating components in machinery. Its durable construction ensures longevity and resistance to wear, making it suitable for various industrial applications. This machine key meets industry standards for quality and performance, providing engineers with a dependable solution for their mechanical needs.