Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3138 1 found under Cell And Valve Assembly Salinity by Mcnab Incorporated. The National Stock Number assigned to this part is 4620010994264, and the Federal Supply Class is 4620 Water Distillation Equipment Marine And Industrial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3138 1.