Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N 3502 218 5P found under Washer Flat by Oerlikon Buehrle Ag. The National Stock Number assigned to this part is 5310121637545, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like N 3502 218 5P.