FX6 0.8mm Pitch Connectors Hirose Electric FX6 0.8mm Pitch Connectors feature a stacking height that can be set at every millimeter between 5mm and 9mm. Hirose FX6 connectors have a 1.7mm long effective contact length. The connector series is designed for use in notebook PCs, business terminals, and other applications requiring miniaturization and a light weight.