Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 45423A found under Grille Metal by E And F Electronics Inc. The National Stock Number assigned to this part is 5670008512274, and the Federal Supply Class is 5670 Building Components Prefabricated. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 45423A.