Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EC501-18-0404K1 found under Connector Plug Elec by Breezeeastern Corporation. The National Stock Number assigned to this part is 5935008183091, 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 EC501-18-0404K1.