Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20056401 found under Kickout Assembly Valve by Strato Tower Inc. The National Stock Number assigned to this part is 2590013558572, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 20056401.