Weidmuller 1640000000 9 Pole orange PCB plug-in female connector with clamping yoke screw system for connecting conductors at 3.5mm pitch. The BL 3.50/09/270F SN OR BX female connector provides space for labelling and can be coded. It is made up of PBT insulator, Cu-Leg contact with tinned surface and 4 to 8µm Sn hot-dip tinned layer structure of plug contact.