John Deere 21H973 0.164" X 3/8" Cylindrical Head Screw, 5-Pack is a high-quality cylindrical head screw designed to provide secure fastening in a variety of applications. Featuring a 4.17 mm diameter with a SLOT drive type, it is i for precision assembly tasks. The screw has a head diameter of 6.86 mm and UNC2A threading, ensuring reliable grip and stability. Made from durable steel and finished with a zinc coating, this screw excellent corrosion resistance and long-lasting performance. Model Number: 21H973