Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R1272-1 found under Bearing Sleeve by Rotair Industries Inc. The National Stock Number assigned to this part is 3120008177231, 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 R1272-1.