Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1 3500 7019 31 IT2 23 found under Washer Spring Tensi by Saacke Gmbh. The National Stock Number assigned to this part is 5310121428168, 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 1 3500 7019 31 IT2 23.