Linksgewinde DIN985 Selbstsichernde Mutter M5 M6 M8 M10 M12 M16 Edelstahl A2 SUS 304 Sicherungsmutter-M12x1,75 (5 Stück) : Amazon.de: Baumarkt
20pcs) DIN 982 M24 Self-Locking Hexagon Nuts, High Type A2 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP0982224: Amazon.com: Industrial & Scientific