Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E1057-80 found under Connector Plug Elec by J B Nottingham And Co Inc. The National Stock Number assigned to this part is 5935016433631, 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 E1057-80.