Arrow Fastener RLFA3/16IP Long Large Flange Aluminum 3/16-Inch Rivets, 30-Pack Long, large flange aluminum 3/16-inch rivets 3/16-inch (5mm) diameter, perfect for heavy duty jobs Grip range for up to 1/2-inch (12mm) thickness 30 per box For use with Arrow model RH200S, RHT300, and RL100S