Aluminum Body Steel Mandrel Rivet .188-.25-in Grip

The Howmet / Marson BR4-4ASD (M40317) is a blind rivet with an aluminum body and steel mandrel, sized at 1/8-inch (0.125 in) diameter. It supports a grip (material thickness) range of 0.188-0.250 inches (≈ 4.78-6.35 mm), features a dome (button) head with a plain finish, and is crafted from aluminum alloy 5056 body. The steel mandrel (with zinc clear trivalent finish) delivers enhanced strength while maintaining corrosion resistance of the body. Ideal for general fastening in assemblies where only one side is accessible, and strength plus corrosion resistance are desired.