Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9RT1A156 found under Resistor Thermal by Therm O Disc Inc. The National Stock Number assigned to this part is 5905003562479, 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 9RT1A156.