Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FB2504-730-1 found under Cover Access by F And B Mfg Co. The National Stock Number assigned to this part is 5340006233111, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FB2504-730-1.