Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12259621 found under Plate Body Structur by Sterling Mfg And Supply Inc. The National Stock Number assigned to this part is 2590012156634, 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 12259621.