Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 539 30 02-74 found under Washerlock by Electrolux Construction Products Inc. The National Stock Number assigned to this part is 5310016781620, 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 539 30 02-74.