Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 99709870031 found under Resistor Fixed Wire by L3 Communications Corp. The National Stock Number assigned to this part is 5905013183012, 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 99709870031.