Prime-Line M6-1.0 x 25 mm Class 8.8 Metric Zinc Plated Steel Flange Bolts (25-Pack) 9089380 - The Home Depot
Hillman 1/4-in x 20 Zinc-plated Steel Flange Nut in the Wing Nuts department at Lowes.com
20Pcs Black Nylon Auto Car Durable Plastic Body Nut Flange Clip Fit For Mercedes Benz For BMW interior parts car accessories|Auto Fastener & Clip| - AliExpress