Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 225-6-6 found under Doubler 90 In by Bowhead Manufacturing Company Llc. The National Stock Number assigned to this part is 4710015606620, 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 225-6-6.