The aerospace industry depends on the tungsten bolts for their combination of high density and mechanical strength which allows them to reduce the physical size of components, offering greater control of weight distribution for propellers, inertial systems and fluid control systems to name a few.
The heat treating / furnace industry uses tungsten bolts in high temperature vacuum furnaces due to tungstens great high temperature strength & stability. Tungsten bolts also play a role in the medical community for their low magnetic properties as well as their radiopaque properties.
The oil & gas industry uses tungsten bolts for radiation shielding properties to protect equipment used in oil and gas detection, as well as down hole logging for density and ability to withstand intense hydrostatic pressure.