Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 753 404 found under Bearing Sleeve by Piper Aircraft Inc. The National Stock Number assigned to this part is 3120006623489, 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 753 404.