Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Z40-0005-008 found under Valve Safety Relief by Harris Corp. The National Stock Number assigned to this part is 4820014178864, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like Z40-0005-008.