93700-05012-4J Screw Oval (5x12) - Overview. The 93700-05012-4J Screw Oval (5x12) is a high-quality genuine OEM screw designed specifically for use in Honda marine engine systems. This oval head screw features a 5mm diameter and 12mm length, making it ideal for securely fastening various components within the engine assembly. It plays a vital role in maintaining the structural integrity and reliable operation of Honda marine engines. Designed to the exact factory specifications, it ensures seaml