Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1038 18 01 05 found under Washer Lock by Koni B V. The National Stock Number assigned to this part is 5310121420649, 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 1038 18 01 05.