Qualfast: 3-OCSH-35 Blind Countersunk Rivet Nut Open Serrated Shank BZP (BX-250) Blind Countersunk Rivet Nut, Open Serrated Shank, Metric, Steel, BZP ( Bright Zinc Plated). MPN: 3-OCSH-35 Blind Countersunk Rivet Nut Open Serrated Shank BZP (BX-250) Attributes: Box Quantity: 1 Drill Size: 5mm Grip range: 1.5 - 3.5mm Length: 11.5mm Material: Steel Product Type: Blind Rivet Nut Countersunk Open Shank Rivet Nut Diameter: M3 Surface Treatment: Zinc Plated