Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2010-017-03 found under Stem And Bellows Assembly by Veeco Instruments Inc. The National Stock Number assigned to this part is 4820003889631, 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 2010-017-03.