Backing Plate for 704-02-62Schaefer Stainless Steel Backing Plate for 704-02-62. Schaefer Marine: Schaefer Marine is a well-known manufacturer of sailboat and marine equipment. They produce a wide range of products for sailing enthusiasts and professionals, including blocks, winches, deck hardware, and various fittings. Backing Plate: A backing plate is a flat piece of material that is often used to reinforce the area around a fastener, such as a bolt or a screw. It helps distribute the load and prevent damage to the surface where the fastener is attached. Backing plates are particularly important in applications where the load is substantial or where the material being fastened is not strong enough to support the load on its own. F/704-02-62: The designation "F/704-02-62" likely refers to a specific part number or model number assigned by Schaefer Marine to a particular backing plate product. Part numbers like these are used for easy identification and ordering of specific components.