Everbilt #8-10 x 1 in. White Ribbed Plastic Anchor with Pan-Head Combo Drive Screw (10-Piece) 803812 - The Home Depot
M10 x 18mm Threaded Screw In Inserts for Plastic Self Tapping Zinc Plated | eBay
Amazon.com: USA Fastener Company Set of 4 PC License Plate Nylon Screw Inserts for Securing License Plates, Frames and Covers Compatible with Cars and Trucks That use Nylon Screw Retainers : Baby