Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y105840418 found under Valve Control Diaph by Leidos Inc. The National Stock Number assigned to this part is 4820011875068, 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 Y105840418.