Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 43W5741-136 found under Washer Lock by Navair And Navsea Managed. The National Stock Number assigned to this part is 5310000190669, 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 43W5741-136.