What is a fastener that has threads at both ends called?

A fastener that has threads at both ends is referred to as a stud. This type of fastener is typically used in applications where a secure connection is needed, and it allows for the attachment of other components at either end. Studs are commonly found in various mechanical and structural applications, as they provide strong support and can be easily installed or removed.

In contrast to a screw, which usually has a head and can be driven into materials, a stud is generally installed by being placed into a tapped hole or nut on one end, while the other end is free to accept a different fastener or component. Recognizing the specific function and design of these fasteners is important within the context of assembly or construction tasks, particularly in sewage treatment facilities where secure and reliable connections are crucial for equipment stability and safety.