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500pcs) DIN 6923 M5 Hexagon Flange Nuts Without Serration A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP6923405: Amazon.com: Industrial & Scientific
(6000 pcs) M6-1.0, DIN 6923, Metric, Hex Flange Nuts, Class 8 Steel, Zinc Plated: Amazon.com: Industrial & Scientific
M6 x 1.00 Coarse Thread DIN 6923 Hex Flange Nut with Serration Stainless Steel 18-8 Pk 100: Amazon.com: Industrial & Scientific
1000pcs) DIN 6923 M4 Hexagon Flange Nuts with Serration A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP692344: Amazon.com: Industrial & Scientific
Amazon.com: (500) M5-0.8 Serrated Hex Flange Nuts Class 8 DIN 6923 Zinc M5x0.8 Flare Nut : Industrial & Scientific