Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 75A430643-2001 found under Bearing Sleeve by Messier Dowty. The National Stock Number assigned to this part is 3120011722641, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 75A430643-2001.