Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EJ 42439 found under Housing Bearing Uni by The Entwistle Company. The National Stock Number assigned to this part is 3130015524791, and the Federal Supply Class is 3130 Bearings Mounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like EJ 42439.