PART NO. SPL.PAGE DESCRIPTION GHF206 15.R.18G Nut (5/16-24-UNF Chrome) (5) - (for chrome bolts, grille assembly) GHF206 16.R.18G Nut (5/16-24-UNF Chrome) (5) -(grille assy, 1600 and 1600-MK-II)