Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number YE3219 found under Nut Self Locking He by Lamson And Sessions Co. The National Stock Number assigned to this part is 5310002632862, 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 YE3219.