Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PI1142-3A found under Bootdust And Moisture Seal by Bae Systems Information And Electronic Systems Integration Inc. The National Stock Number assigned to this part is 5340006440109, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PI1142-3A.