Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AR13S4823-255940 found under Strainer Sediment by Viskon Aire Corp. The National Stock Number assigned to this part is 4730002472370, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AR13S4823-255940.