Qualfast: 4.0X16MM Aluminium Countesunk Head Rivet (Box 500) Countersunk For all applications of blind riveting. Aluminium rivet head with steel mandrel. Medium strength, use with aluminium and where rust is a problem. Select grip based on thickness of material to be riveted. MPN: QFT-644-1161R EAN: 5036140321434 4.0X16MM Aluminium Countesunk Head Rivet (Box 500) Attributes: Box Quantity: 500 Head Shape: Countersunk Head Length: 16mm Material: Aluminium Rivet Diameter: 4.0mm Surface Treatment: Zinc Plated