Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B2143312-5 found under Conduit Assembly No by Flexible Technologies Inc. The National Stock Number assigned to this part is 5975000812171, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B2143312-5.