Compare Quick view Fortis End Plate & Castle Nut - FORTQD-END-CN-COMBO Fortis Manufacturing, Inc. Log in for pricing The Fortis Standard Castle Nut is manufactured from a solid piece of billet aircraft grade aluminum that offers a significant weight reduction to your castle nut. If youre trying to save ounces, this... Log in for pricing Compare Quick view Qty in Cart: 0 Price: Log in for pricing Subtotal: