Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number V3D10017 ITEM 16 found under Guide Piston by Vacco Industries. The National Stock Number assigned to this part is 4820011210195, 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 V3D10017 ITEM 16.