Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A1199C1043 found under Valve Vent by Axletech International Inc. The National Stock Number assigned to this part is 4820007264719, 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 A1199C1043.