Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 539158 1508 found under Resistor Fixed Film by Raytheon Company. The National Stock Number assigned to this part is 5905011223164, 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 539158 1508.