Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B745-90000 found under Tape Insulation Ele by Nch Corporation. The National Stock Number assigned to this part is 5970012243064, and the Federal Supply Class is 5970 Electrical Insulators And Insulating Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B745-90000.