Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20B-5779 found under Valve Gate by Snap Tite Inc. The National Stock Number assigned to this part is 4820013318360, 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 20B-5779.