Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E4407BOPT1DR BAA A4H UK9 A4J B7D found under Analyzer Spectrum by Agilent Technologies. The National Stock Number assigned to this part is 6625015347623, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E4407BOPT1DR BAA A4H UK9 A4J B7D.