Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EE31981 found under Parts Kit Ball Valv by Oshkosh Corporation. The National Stock Number assigned to this part is 4820011284420, 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 EE31981.