Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS303P30 found under Bearing Set Sleeve by Jpi Transportation Products Inc. The National Stock Number assigned to this part is 3120008258771, 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 MS303P30.