M4 Afnor Flat Washers Type Z (NFE 25-514) - A2 Stainless Steel These Afnor Flat Washers Type Z are designed to enhance and aid the load bearing of a threaded fastener. Flat washers as a whole are versatile and have multiple ways to use them including pre-load indication and wear protection. These Afnor Flat Washers Type Z are made from A2 Stainless Steel which provides corrosion and oxidation resistance. For larger quantities or custom lengths, please email and one of our team will provide you with a quotation. M4 Afnor Flat Washers Type Z (NFE 25-514) - A2 Stainless Steel