M12 x 37mm OD Stainless Steel Flat Washers (Pack of 5), Corrosion/Rust Resistant, Metric Metal Flat Washers for Screws & Bolts, 18-8 (304) Stainless Steel - by Chipmunk Hardware, SSV77120
High quality stainless steel (304 / 18-8 / A2) flat washers. Stainless steel provides corrosion & rust resistance, and is often used in interior and exterior environments. Fits M12 diameter bolts and screws. Meets DIN 9021B specs. Packaged in USA. Pack of 5.