The Key 1/4 x 1/4 x 5-3/8 Form B is constructed from carbon steel, providing reliable strength and durability for mechanical applications. With dimensions of 1/4 inch by 1/4 inch and a length of 5-3/8 inches, this key is designed to fit securely into a slot in a rotating shaft, ensuring proper alignment and connection. The carbon steel material offers excellent resistance to wear, making it suitable for various high-load applications. This product adheres to industry standards, ensuring dependable performance in your machinery and equipment.