Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C66C30E found under Cap Valve Gas Cylinder Outlet by Kerotest Manufacturing Corp. The National Stock Number assigned to this part is 8120002166799, 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 C66C30E.