Threaded Rivet Nuts Designed for Thin Materials & Blind Applications | Goebel Fasteners
Amazon.com: Metal Magery Steel PRE-BULBED Shank Threaded Insert Multi Grip Rivet Nut 1/4-20 X (0.280-0.500 Inch Grip) Large Flange Gold Zinc Finish (Pack of 25) : Industrial & Scientific