Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RS2-00124-021 found under Resistor Fixed Film by Microsource Inc. The National Stock Number assigned to this part is 5905013521713, 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 RS2-00124-021.