A hex socket bolt, also known as a socket head cap screw, is a type of fastener that has a cylindrical head with a hexagonal recessed socket, which is designed to be tightened or loosened with a hex key or Allen wrench. Here are some of the features of hex socket bolts:

1. Head: The head of a hex socket bolt is cylindrical in shape and has a hexagonal socket in the center. This design allows for easy installation and removal of the bolt using a hex key or Allen wrench.

2. Thread: The thread of a hex socket bolt is generally coarse and can be fully threaded or partially threaded. The thread is designed to provide a secure grip and prevent the bolt from loosening over time.

3. Material: Hex socket bolts are typically made from high-strength materials such as steel, stainless steel, or titanium. The choice of material will depend on the specific application and the level of strength and corrosion resistance required.

4. Size: Hex socket bolts are available in a wide range of sizes, from small #0-80 screws to large 2-inch diameter bolts. The size of the bolt will depend on the specific application and the amount of force that needs to be applied.

5. Drive Type: The hex socket bolt is driven using a hex key or Allen wrench, which fits into the hexagonal socket in the bolt’s head. This allows for precise torque application and ensures that the bolt is securely fastened.