A bolted joint is one of the most common elements in construction and machine design. It consists of a male threaded fastener (e. g., a bolt) that captures and joins other parts, secured with a matching female screw thread. There are two main types of bolted joint designs: tension joints and shear joints.
The selection of the components in a threaded joint is a complex process. Careful consideration is given to many factors such as temperature, corrosion, vibration, fatigue, and initial preload.
I'd like to focus the post on threaded joints used in clean room conditions with stainless materials (aluminum, bronze, stainless steel, and titanium) for aerospace applications that need to survive vibration and temperature cycles.
In general, I believe lubrication is always preferable in...