Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number I-8198 STYLE 4 GROOVE found under Bearing Sleeve by Bunting Bearings Llc. The National Stock Number assigned to this part is 3120002425270, 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 I-8198 STYLE 4 GROOVE.