18-8 Stainless Steel Acorn Nut, Grade 8, Right Hand Threads, Meets DIN 1587, M14-2 Threads: Amazon.com: Industrial & Scientific
600pcs) DIN 1587 M8 Hexagon Domed Cap Nuts, High Type A2 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP158728: Amazon.com: Industrial & Scientific