The Bolt-wash.,8x20 is the most widely applied product in the ATC70 1979 (Z) USA STEP / STEP GUARD ( four times ).
Of all the components used in this assembly the Bar Comp.,step is the most expensive.
The most reasonably priced component used on the Atc70 1979 (z) Usa Step / Step Guard is the Bolt,flange 6x20.