Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3417 found under Valve And Filter As by Rockwell Collins Electromechanical. The National Stock Number assigned to this part is 1660005677911, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3417.