Qualfast: 4-OCSH-40 Blind Countersunk Rivet Nut Serrated Shank A2 (BX-250) Blind Rivet Nut Metric A2 Stainless Steel Blind Countersunk Rivet Nut Serrated Shank MPN: 4-OCSH-40 Blind Countersunk Rivet Nut Serrated Shank A2 (BX-250) Attributes: Box Quantity: 1 Drill Size: 6mm Grip range: 1.5 - 4.0mm Length: 12.5mm Material: A2 Stainless Steel Product Type: Blind Rivet Nut Countersunk Open Shank Rivet Nut Diameter: M4 Surface Treatment: Plain