Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S3C0016 found under Quiet Vent Assembly by Vacco Industries. The National Stock Number assigned to this part is 4820015244456, 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 S3C0016.