Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AK20-744UA found under Mandrel Honing Milling Machine by Sunnen Products Company. The National Stock Number assigned to this part is 3460010510434, and the Federal Supply Class is 3460 Machine Tool Accessories. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AK20-744UA.