Mutter - Sechskantmutter M14 x 1,5-8-A4K (DIN 985) - Feingewinde, selbstsichernd : Amazon.de: Baumarkt
500pcs) DIN 6926 M5 Self-Locking Hexagon Flange Nuts Without Serration A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP6926405: Amazon.com: Industrial & Scientific