Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K102CD1 4 found under Valve by Arnold A Semler Inc. The National Stock Number assigned to this part is 4820005665288, 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 K102CD1 4.