The G L Huyett Machine Key 9/16 x 3/4 x 4 Form B is an undersized key made from durable carbon steel, designed for effective engagement in mechanical assemblies. With dimensions of 9/16" x 3/4" x 4", this key is perfect for applications requiring precise fit and reliable torque transmission. The Form B design ensures compatibility with standard keyways, making it a versatile choice for engineers and technicians. Its robust construction allows it to perform well under high loads and in challenging environments, meeting industry standards for quality and performance.