Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AE18900 013 found under Washer Flat by Satair A S. The National Stock Number assigned to this part is 5310010809102, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AE18900 013.