Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MBB1290D found under Honing Machine Horizontal by Sunnen Products Company. The National Stock Number assigned to this part is 3419002236729, and the Federal Supply Class is 3419 Miscellaneous Machine Tools. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MBB1290D.