Marine Bolt Supply offers both type 18-8 stainless and (marine grade) type 316 stainless steel square drive bugle deck screws. Type 18-8 stainless steel has a high resistance to rust and corrosion and may be mildly magnetic. Type 316 stainless offers superior resistance to rust and corrosion and is recommended for chemical, salt water or coastal environments. Our bugle style deck screws have a square drive and a curved/tapered neck so that the screw will finish flush with the surface. Please select the category type below.