Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 251-00-5000 found under Resistor Variable N by Trw Inc. The National Stock Number assigned to this part is 5905002279759, 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 251-00-5000.