400pcs) DIN 982 M8 Self-Locking Hexagon Nuts, High Type A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP098248: Amazon.com: Industrial & Scientific
Amazon.com: uxcell® 8pcs M8 x 1.25mm Pitch Metric Thread 304 Stainless Steel Left Hand Lock Nuts : Industrial & Scientific