uxcell 20 Pcs Carbon Steel Half Hex Body Blind Rivet Nuts Nutserts M10x21mm Thread Size: (D) M10/ 0.4"; Product Name: Rivet Nut; Material: Carbon Steel, Zinc Plated Weight: 182g; Package Content: 20 x Rivet Nuts; Main Color: Bronze Tone Application Hole Size (d0): 13mm/ 0.5"; Flange Size (dk*k): 18 x 1.6mm/ 0.7" x 0.063" (D*Thickness) Thread Pitch: 1.5mm; Total Length (L): 21mm/ 0.8" Body Diameter (d): 13mm/ 0.5"; Hex Body Size (M): 12.7mm/ 5"