Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 57E17-1 found under Terminal Feedthru by Mid Continent Instrument Co Inc. The National Stock Number assigned to this part is 5940014146339, and the Federal Supply Class is 5940 Lugs Terminals And Terminal Strips. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 57E17-1.