Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 505074 found under Cylinder Assembly A by Big Joe Mfg Co. The National Stock Number assigned to this part is 2590012943412, 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 505074.