10 pcs M42-4.5 DIN 6330 Hex High Nuts A4 Stainless | eBay
DIN 6330 Stainless Steel Fixture Nuts, with Spherical End | JW Winco Standard Parts
25pcs) DIN 6330 M16 Hexagon Nuts, Height 1,5 d, Type B A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP6330416: Amazon.com: Industrial & Scientific