Stationary fifth wheels are best suited for applications where the axle loading, kingpin setting, and vehicle combination length all remain constant throughout the fleet. Stationary fifth wheels are generally lighter weight and lower cost than sliding fifth wheels; however, they do not offer the application flexibility of a sliding fifth wheel.
If a stationary fifth wheel is chosen, the user still must determine whether to use an "angle-on-frame" (low cost and less torsional rigidity), a "plate mount" (higher cost and high torsional rigidity), or an "outboard angle mount" (universal hole pattern for medium torsional rigidity bolt-on mounting). This selection should be made to compliment the suspension and tractor frame.