Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 31-01648B found under Capacitor Resistor by York International Corporation. The National Stock Number assigned to this part is 5915015090412, and the Federal Supply Class is 5915 Filters And Networks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 31-01648B.