Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 81705P20 found under Bearing Half Sleeve by Pratt And Whitney Canada Inc Whi. The National Stock Number assigned to this part is 3120007000314, 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 81705P20.