Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4406-5 found under Valve Special by Tactair Fluid Controls Inc. The National Stock Number assigned to this part is 1650008495962, and the Federal Supply Class is 1650 Aircraft Hydraulic Vacuum And De-Icing System Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4406-5.