Aluminum Blind Rivet AB4-4A; 3⁄16-¼-in Grip Range

The Howmet / Marson BR4-4AAD (part number M40217) is an all-aluminum, open-end blind rivet with a 1/8-inch (0.125 in) nominal body diameter and a grip (material thickness) range from 0.188-0.250 inches (≈ 3⁄16-to-¼ inch). It features a dome (button) head, aluminum mandrel, and a plain finish. Ideal for light to medium fastening applications where access is only available from one side, delivering corrosion resistance, lightweight strength, and reliable fastening in assemblies of aluminum or compatible materials.