This pack of 50 Brighton Best Castle Nuts is perfect for your business or industrial fastening needs. Made of medium carbon steel with a zinc plated CR+3 coating, these nuts are durable and strong. With a thread size of 5/16-24 and a fine thread pitch, they are designed to fit securely and provide a reliable hold.

The nuts are grade 2 and have an external hex drive style, making them easy to install and remove. The thickness of each nut is 21/64" (0.320-0.336"), and the thread diameter is 5/16". These Castle Nuts are a great addition to your fastener collection, providing a versatile and dependable option for your projects.