Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B8-031-04NB-150 found under by Alvis Aerospace And Transmissions. The National Stock Number assigned to this part is 5905011694098, 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 B8-031-04NB-150.