Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FR4-3050 found under Bearing Set Sleeve by Mitsubishi Caterpillar Forklift. The National Stock Number assigned to this part is 3120006908642, 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 FR4-3050.