uxcell 20pcs M10x21mm Ribbed Body Flat Head Blind Rivet Nuts Threaded Inserts Nutserts Thread Size: (D) M10/ 0.4"; Product Name: Rivet Nut; Material: Carbon Steel, Zinc Plated Weight: 163g; Package Content: 20 x Rivet Nuts Main Color: Bronze Tone; Application Hole Size (d0): 11mm/ 0.43" Flange Size (dk*k): 17 x 1.7mm/ 0.67" x 0.067" (D*Thickness); Thread Pitch: 1.5mm Total Length (L): 21mm/ 0.8"; Body Diameter (d): 13mm/ 0.5"