Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WIS5781B1-3 found under Connector Plug Elec by Selex Es Limited. The National Stock Number assigned to this part is 5935009620407, and the Federal Supply Class is 5935 Connectors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like WIS5781B1-3.