Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 457EA3 found under Ballscrew Assembly by Cef Industries Inc. The National Stock Number assigned to this part is 1680007770136, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 457EA3.