Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PT1-7421 found under Filter Band Pass by Piezo Technologyinc. The National Stock Number assigned to this part is 5915013983264, 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 PT1-7421.