Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 378414 found under Valve Diaphragm Stop by Hayes Dana Ltd Corporate Offices. The National Stock Number assigned to this part is 4820011320583, 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 378414.