Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F4857 found under Assembly Connecting by Star Parts Inc. The National Stock Number assigned to this part is 3610007885252, and the Federal Supply Class is 3610 Printing Duplicating And Bookbinding Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like F4857.