Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 428523-2 found under Resistor Variable W by Simmonds Precision Products Inc. The National Stock Number assigned to this part is 5905004027358, 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 428523-2.