200pcs) DIN 6923 MM10 Hexagon Flange Nuts Without Serration A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP69234010: Amazon.com: Industrial & Scientific
500pcs) DIN 6923 M10 Hexagon Flange Nuts with Serration A2 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP6923210: Amazon.com: Industrial & Scientific
2000 pcs) M10-1.5, DIN 6923, Metric, Hex Flange Nuts, Class 10 Steel, Yellow Zinc Plated and Baked: Amazon.com: Industrial & Scientific
Amazon.com: 25 M10-1.5 Hexagon Flange Nut with Serrations Class 10 Zinc DIN 6923/ISO 4161 : Industrial & Scientific
M10 x 1.50 Coarse Thread DIN 6923 / ISO 4161 Class 8 Hex Flange Nut with Serration Medium Carbon Steel Zinc Plated Pk 50: Amazon.com: Industrial & Scientific