Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LWG28R-139 found under Bearing Plain Spherical by Specline Inc. The National Stock Number assigned to this part is 3120011725147, 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 LWG28R-139.