Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4E05 found under Washer Lock by Clark Material Handling Co. The National Stock Number assigned to this part is 5310000120214, 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 4E05.