Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6085-4 found under Valve Check by Snap Tite Inc. The National Stock Number assigned to this part is 4820008181457, 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 6085-4.