The Hexagonal Socket Head Screw is equipped with a hexagonal socket head, also known as an Allen head. This head type allows for tightening and loosening using an Allen wrench or hex key. The threads on this screw help to create a secure and durable connection. The screw has a 5/16-inch diameter, which is the major diameter of the threaded portion. It features 18 threads per inch (TPI) thread pattern, meaning there are 18 threads within one inch of the screw's length. The screw is half-threaded and the remains will be plain.Attributes:• Manufactured to precise specifications and are built for durability and reliability• Withstands high strength and high temperature Applications:The Hexagonal Socket Head Screw is used in the part of the fan drive for its secure fastening and suitability for tight spaces.