Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 133861 ITEM NO 12 found under Parts Kit Bearing Replacement Me by Kongsberg Maritime Sweden Ab. The National Stock Number assigned to this part is 3120015444140, 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 133861 ITEM NO 12.