2 pcs) M24-3.0, DIN 1587, Metric, Acorn Cap Dome Nuts, Brass: Amazon.com: Industrial & Scientific
Hex Cap Nuts M4 DIN 1587 Pack of 10 : Amazon.de: DIY & Tools
Nylon Acorn Nut, Black, Right Hand Threads, Meets DIN 1587, M4-0.7 Threads (Pack of 100): Amazon.com: Industrial & Scientific
18-8 Stainless Steel Acorn Nut, Grade 8, Right Hand Threads, Meets DIN 1587, M14-2 Threads: Amazon.com: Industrial & Scientific
10pcs) DIN 1587 M27 Hexagon Domed Cap Nuts, High Type A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP1587427: Amazon.com: Industrial & Scientific