Qualfast: 2.5X4.7MM Drive Screw NI Plated (BX-500) Rivet Nut - Drive Screw, Metric, Ni - Nickel Plated. MPN: 2.5X4.7MM Drive Screw NI Plated (BX-500) Attributes: Box Quantity: 500 Length: 4.7mm Material: Steel Rivet Diameter: 2.5mm Surface Treatment: Nickel Plated