500pcs) DIN 6923 M5 Hexagon Flange Nuts Without Serration A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP6923405: Amazon.com: Industrial & Scientific
7500pcs) DIN 6923 M6 Hexagon Flange Nuts with Serration A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP692346GVP: Amazon.com: Industrial & Scientific
wanyifa M14 x 1,5 mm TC4 Titan Ti Flansch Mutter DIN 6923 Für Schraube Schraube Verschluss 2 Stück : Amazon.de: Baumarkt