Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 613-A-10654 ITEM 18 found under Cell Salinity Detector by Aqua Chem Inc. The National Stock Number assigned to this part is 4620015065058, 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 613-A-10654 ITEM 18.