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: 25 M10-1.5 Hexagon Flange Nut - Non-Serrated Class 10 Zinc DIN 6923 / ISO 4161 : Industrial & Scientific
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Aexit DIN 6923 Nails, Screws & Fasteners Colorful TC4 Titanium Hex Flange Nut Bolt M5x0.8mm for Nut & Bolt Sets Motorcycle Bike - - Amazon.com
Amazon.com: 5 M16-2.0 Hexagon Flange Nut - Non-Serrated Class 10 Zinc. DIN 6923 / ISO 4161 : Industrial & Scientific