WHAT IS THE “F” DIMENSION OR BRAKE OFFSET?

The “F” dimension on the Strange axle order form is the measurement from the outside of the housing end (the face of the housing end, where the retainer plate would contact) to the outside of the axle flange, where the inside of the drum or the inside of the “hat” of the disc would contact the bare axle flange. This measurement is essential to make sure the brakes fit properly. This dimension is also referred to as brake standout.