Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5D09279-H03 found under Valve Cover Screw by Westinghouse Electric Corp. The National Stock Number assigned to this part is 5305016131525, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5D09279-H03.