Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number V9990ZB1001 found under Plate Travel Indica by Hammel Dahl Inc. The National Stock Number assigned to this part is 4820011858190, 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 V9990ZB1001.