Based on this product's specifications, here are some alternatives and similar models
Stainless Steel Sheet Washer Type 1 A2 1124, No name, MPN 1124
Summary description:
Sheet washer (plate washer) Type 1 in stainless steel A2, model 1124, for distributing load and protecting material around fastener holes. Suitable for use with bolts and screws in general assembly, construction, marine and outdoor applications where corrosion resistance is required. Compact metal washer designed for mechanical fastening and reinforcement of joints.