Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 35772TB-812 found under Bearing Washer Thrust by Altra Holdings Inc. The National Stock Number assigned to this part is 3120009645707, 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 35772TB-812.