Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 218041508 found under Nut Plain Assembled Washer by Electro Mechanical Technologies Inc. The National Stock Number assigned to this part is 5310016565953, 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 218041508.