Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 269390-3 found under Valve Cylinder Gas by Exelis Inc. The National Stock Number assigned to this part is 8120015671592, and the Federal Supply Class is 8120 Commercial And Industrial Gas Cylinders. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 269390-3.