Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HX-2300B-22-401 found under Cover Assembly Insp by Dc Fabricators Inc. The National Stock Number assigned to this part is 4470014704243, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HX-2300B-22-401.