Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EP-40013 FIND NO 13 found under Bearing Washer Thru by The Entwistle Company. The National Stock Number assigned to this part is 3120015643964, 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 EP-40013 FIND NO 13.