M8 Left Hand Thread Hex Jam Nuts (DIN 439) - 18-8 / 304 Stainless Steel: Accu.co.uk: Nuts
100 pcs) Metric DIN 439B M10X1 Thin Hexagon Jam Nut Stainless Steel A2: Hex Nuts: Amazon.com: Industrial & Scientific
1000pcs) DIN 439 M8 Hexagon Thin Nuts with Left-Hand Thread A2-035 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP043928L: Amazon.com: Industrial & Scientific