Amazon.com: Aluminum Flat Head M8 Rivet Nut Rivnut Insert Nutsert 8mm (Pack of 25) : Industrial & Scientific
M8 x 1.25 Marson MLR Ribbed Large Flange Rivet Nut, Steel, 0.7mm - 3.8mm Grip, 25-pack | K.L. Jack
Flat Reduce Hex Head Reduced Round Plain Close Open End Semi-Hex Knurled Inner-Hex Body Steel SS304 Ss 316 Aluminum M8 M10 Insert Rivnut Rivet Nut Nutsert - China M4 M5 M6, M8