Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 35850 found under Valve Diaphragm Sto by Milton Roy Co. The National Stock Number assigned to this part is 4820015724503, 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 35850.