Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K879308-003 found under Valve Vent by Kaman Aerospace Corporation. The National Stock Number assigned to this part is 4820015084650, 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 K879308-003.