Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KB737APUSOP found under by D3 Technologies Inc. The National Stock Number assigned to this part is 4710014739486, and the Federal Supply Class is 4710 Pipe Tube And Rigid Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KB737APUSOP.