Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R-M-28HR0248 found under Coupling by Rockwell International Corp. The National Stock Number assigned to this part is 3610010625568, 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 R-M-28HR0248.