Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 099 00131 03 ITEM 9 63 found under Bearing Sleeve by Kato Engineering Inc. The National Stock Number assigned to this part is 3120012952977, 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 099 00131 03 ITEM 9 63.