Comes with 4 (four) ¾ inch ¼ 20 Flathead Stainless Steel Screws. 

The LeveLock® All Angle Adjustable fishing rod holder mount is constructed of marine grade Stainless Steel tubing and anodized Aluminum components. These components have been hard anodized to aircraft quality for extremely high corrosion resistance. With an increased adjustment range and sturdy draw tight handle design this heavy duty mount is the strongest, most corrosion resistant, and most versatile mount available on the market.