Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 13077278-509 found under Resistor Thermal by Program Manager Advanced Attack. The National Stock Number assigned to this part is 5905013271095, and the Federal Supply Class is 5905 Resistors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 13077278-509.