2/5/10/25/50pcs M2 M2.5 M3 M4 M5 M6 M8 M10 M12 M16 304 Stainless Steel Hex Hexagon Nylon Insert Self Lock Nut Nylock Nut LocknutHome Improvement > Hardware1,83 $ (≈ 1,51 CHF)1,99 $Auf LagerSold by AliExpress WWZum Shop