Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CD030-0183 found under Cock Plug by Couse Mfg Inc. The National Stock Number assigned to this part is 4820002633019, 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 CD030-0183.